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<link:linkbase xmlns:link='http://www.xbrl.org/2003/linkbase' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd'>
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<link:loc xlink:href='mda-2008-03-31.xsd#mda_RevenueRecognitionDiscussion' xlink:label='loc_RevenueRecognitionDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_RevenueRecognitionDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of revenue recognition policies. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction should be disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure should indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure should encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate how costs of sales are recognized, and the entity's treatment of any unearned or deferred revenue that arises from the transaction.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RevenueRecognitionDiscussion' xlink:to='lab_RevenueRecognitionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk - Qualitative Disclosures; pertaining to registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQualitativeDisclosures' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk - Sensitivity Analysis; pertaining to registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskSensitivityAnalysis' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk - Tabular Presentation; pertaining to registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskTabularPresentation' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and Qualitative Disclosures about Market Risk - Value at Risk; pertaining to registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskValueAtRisk' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and qualitative disclosures about market risk discussion intended to clarify registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:label='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:type='locator' />
<link:label xlink:label='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Quantitative and qualitative disclosures about market risk, quantitative disclosures, general; pertaining to registrant's exposures to market risk associated with activities in derivative financial instruments, other financial instruments, and derivative commodity instruments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:to='lab_QuantitativeAndQualitativeDisclosuresAboutMarketRiskQuantitativeDisclosuresGeneral' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_DescriptionOfBusiness' xlink:label='loc_DescriptionOfBusiness' xlink:type='locator' />
<link:label xlink:label='lab_DescriptionOfBusiness' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Description of the business of the entity.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DescriptionOfBusiness' xlink:to='lab_DescriptionOfBusiness' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ManagementsDiscussionAndAnalysisTextBlock' xlink:label='loc_ManagementsDiscussionAndAnalysisTextBlock' xlink:type='locator' />
<link:label xlink:label='lab_ManagementsDiscussionAndAnalysisTextBlock' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>This element may be used to tag the entire text for management discussion and analysis information.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ManagementsDiscussionAndAnalysisTextBlock' xlink:to='lab_ManagementsDiscussionAndAnalysisTextBlock' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_EffectsOfChangingPricesDiscussion' xlink:label='loc_EffectsOfChangingPricesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_EffectsOfChangingPricesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Supplementary information that may be furnished, but is not required, regarding information on the effects of changing prices.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfChangingPricesDiscussion' xlink:to='lab_EffectsOfChangingPricesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:label='loc_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:type='locator' />
<link:label xlink:label='lab_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>The effect of gas imbalances on operations on liquidity and capital resources.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:to='lab_EffectsOfGasImbalancesOnOperationsLiquidityAndCapitalResources' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:label='loc_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:type='locator' />
<link:label xlink:label='lab_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Disclosure of the trends and uncertainties related to exploration expenses, and the extent to which they were affected by the deferral of exploratory drilling costs.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:to='lab_TrendsAndUncertaintiesRelatedToOilAndGasExplorationExpenses' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_BusinessSegmentsDiscussion' xlink:label='loc_BusinessSegmentsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_BusinessSegmentsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of business segments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsDiscussion' xlink:to='lab_BusinessSegmentsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_BusinessSegmentsPrincipleMarketsDistribution' xlink:label='loc_BusinessSegmentsPrincipleMarketsDistribution' xlink:type='locator' />
<link:label xlink:label='lab_BusinessSegmentsPrincipleMarketsDistribution' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of business segments' markets.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsPrincipleMarketsDistribution' xlink:to='lab_BusinessSegmentsPrincipleMarketsDistribution' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:label='loc_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:type='locator' />
<link:label xlink:label='lab_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of revenue contributed by type of product and service.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:to='lab_BusinessSegmentsRevenueContributedByTypeOfProductOrService' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_BusinessSegmentsForeignOperationsRisks' xlink:label='loc_BusinessSegmentsForeignOperationsRisks' xlink:type='locator' />
<link:label xlink:label='lab_BusinessSegmentsForeignOperationsRisks' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of foreign operation risks.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessSegmentsForeignOperationsRisks' xlink:to='lab_BusinessSegmentsForeignOperationsRisks' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_SelectedFinancialData' xlink:label='loc_SelectedFinancialData' xlink:type='locator' />
<link:label xlink:label='lab_SelectedFinancialData' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Selected financial data as presented in management discussion and analysis.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialData' xlink:to='lab_SelectedFinancialData' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:label='loc_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:type='locator' />
<link:label xlink:label='lab_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Pro forma information for accounting changes, as presented in management discussion and analysis' selected financial data.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:to='lab_SelectedFinancialDataProFormaInformationForAccountingChange' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_SelectedFinancialDataMattersAffectingComparability' xlink:label='loc_SelectedFinancialDataMattersAffectingComparability' xlink:type='locator' />
<link:label xlink:label='lab_SelectedFinancialDataMattersAffectingComparability' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Matters affecting comparability as presented in management discussion and analysis' selected financial data.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SelectedFinancialDataMattersAffectingComparability' xlink:to='lab_SelectedFinancialDataMattersAffectingComparability' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_SignificantAccountingPoliciesAndAssumptions' xlink:label='loc_SignificantAccountingPoliciesAndAssumptions' xlink:type='locator' />
<link:label xlink:label='lab_SignificantAccountingPoliciesAndAssumptions' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>When financial statements are issued purporting to present fairly financial position, cash flows, and results of operations in accordance with generally accepted accounting principles, a description of all significant accounting policies of the reporting entity should be included as an integral part of the financial statements.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_SignificantAccountingPoliciesAndAssumptions' xlink:to='lab_SignificantAccountingPoliciesAndAssumptions' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_RevenueDiscussion' xlink:label='loc_RevenueDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_RevenueDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of revenue.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RevenueDiscussion' xlink:to='lab_RevenueDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_CostAndExpenseDiscussion' xlink:label='loc_CostAndExpenseDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_CostAndExpenseDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of costs and expenses.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_CostAndExpenseDiscussion' xlink:to='lab_CostAndExpenseDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_GeneralOperationsDiscussion' xlink:label='loc_GeneralOperationsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_GeneralOperationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of operations.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_GeneralOperationsDiscussion' xlink:to='lab_GeneralOperationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_IncomeTaxesDiscussion' xlink:label='loc_IncomeTaxesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_IncomeTaxesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of income taxes.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_IncomeTaxesDiscussion' xlink:to='lab_IncomeTaxesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LiquidityCapitalResourcesDiscussion' xlink:label='loc_LiquidityCapitalResourcesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_LiquidityCapitalResourcesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of liquidity and capital resources.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesDiscussion' xlink:to='lab_LiquidityCapitalResourcesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:label='loc_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:type='locator' />
<link:label xlink:label='lab_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of employees' stock ownership plans.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:to='lab_LiquidityCapitalResourcesLeveragedEmployeesStockOwnershipPlans' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:label='loc_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:type='locator' />
<link:label xlink:label='lab_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of changes in earnings per share.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:to='lab_LiquidityCapitalResourcesChangesInEarningsPerShare' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:label='loc_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:type='locator' />
<link:label xlink:label='lab_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of cash outlays for income taxes.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:to='lab_LiquidityCapitalResourcesCashOutlaysForIncomeTaxes' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:label='loc_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:type='locator' />
<link:label xlink:label='lab_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of high yield or highly leveraged transactions.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:to='lab_LiquidityCapitalResourcesHighYieldOrHighlyLeveragedTransactions' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_DerivativesActivitiesDiscussion' xlink:label='loc_DerivativesActivitiesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_DerivativesActivitiesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of use of derivatives.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DerivativesActivitiesDiscussion' xlink:to='lab_DerivativesActivitiesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ContingenciesDiscussion' xlink:label='loc_ContingenciesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ContingenciesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of contingencies.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ContingenciesDiscussion' xlink:to='lab_ContingenciesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_MaterialChangesDiscussion' xlink:label='loc_MaterialChangesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_MaterialChangesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of material changes.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_MaterialChangesDiscussion' xlink:to='lab_MaterialChangesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:label='loc_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of foreign operations and foreign currency transactions.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:to='lab_ForeignOperationsAndForeignCurrencyTransactionsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AccountingChangesDiscussion' xlink:label='loc_AccountingChangesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AccountingChangesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections that may be reported in the Company's financial statements for the period.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AccountingChangesDiscussion' xlink:to='lab_AccountingChangesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ChangesInAccountingEstimatesDiscussion' xlink:label='loc_ChangesInAccountingEstimatesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ChangesInAccountingEstimatesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of changes in accounting estimates.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesInAccountingEstimatesDiscussion' xlink:to='lab_ChangesInAccountingEstimatesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AllowanceForLoanLossesDiscussion' xlink:label='loc_AllowanceForLoanLossesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AllowanceForLoanLossesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of allowances for loan losses.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AllowanceForLoanLossesDiscussion' xlink:to='lab_AllowanceForLoanLossesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_RestructuringChargesDiscussion' xlink:label='loc_RestructuringChargesDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_RestructuringChargesDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of restructuring charges.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesDiscussion' xlink:to='lab_RestructuringChargesDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_RestructuringChargesMaterialRestructuringCharges' xlink:label='loc_RestructuringChargesMaterialRestructuringCharges' xlink:type='locator' />
<link:label xlink:label='lab_RestructuringChargesMaterialRestructuringCharges' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of material restructuring charges.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesMaterialRestructuringCharges' xlink:to='lab_RestructuringChargesMaterialRestructuringCharges' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_RestructuringChargesPriorPeriodRestructuringCharges' xlink:label='loc_RestructuringChargesPriorPeriodRestructuringCharges' xlink:type='locator' />
<link:label xlink:label='lab_RestructuringChargesPriorPeriodRestructuringCharges' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of prior period restructuring charges.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesPriorPeriodRestructuringCharges' xlink:to='lab_RestructuringChargesPriorPeriodRestructuringCharges' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:label='loc_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:type='locator' />
<link:label xlink:label='lab_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of the nature and amounts of exit costs.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:to='lab_RestructuringChargesNatureAndAmountsOfExitCosts' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ImpairmentAndGoodwillDiscussion' xlink:label='loc_ImpairmentAndGoodwillDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ImpairmentAndGoodwillDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of goodwill and impairment.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ImpairmentAndGoodwillDiscussion' xlink:to='lab_ImpairmentAndGoodwillDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_BusinessCombinationsDiscussion' xlink:label='loc_BusinessCombinationsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_BusinessCombinationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of business combinations.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_BusinessCombinationsDiscussion' xlink:to='lab_BusinessCombinationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_DiscontinuedOperationsDiscussion' xlink:label='loc_DiscontinuedOperationsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_DiscontinuedOperationsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of discontinued operations.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DiscontinuedOperationsDiscussion' xlink:to='lab_DiscontinuedOperationsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ProductDevelopmentDiscussion' xlink:label='loc_ProductDevelopmentDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ProductDevelopmentDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of research and product development.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ProductDevelopmentDiscussion' xlink:to='lab_ProductDevelopmentDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AlternativeMeasuresOfPerformanceDiscussion' xlink:label='loc_AlternativeMeasuresOfPerformanceDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AlternativeMeasuresOfPerformanceDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of alternative measures of performance.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AlternativeMeasuresOfPerformanceDiscussion' xlink:to='lab_AlternativeMeasuresOfPerformanceDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_EuroConversionDiscussion' xlink:label='loc_EuroConversionDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_EuroConversionDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of euro conversion.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EuroConversionDiscussion' xlink:to='lab_EuroConversionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_InvestmentsDiscussion' xlink:label='loc_InvestmentsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_InvestmentsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of income and losses from investments.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_InvestmentsDiscussion' xlink:to='lab_InvestmentsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_FederalFinancialAssistanceDiscussion' xlink:label='loc_FederalFinancialAssistanceDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_FederalFinancialAssistanceDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of federal financial assistance.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FederalFinancialAssistanceDiscussion' xlink:to='lab_FederalFinancialAssistanceDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AcquisitionOfOwnStockDiscussion' xlink:label='loc_AcquisitionOfOwnStockDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AcquisitionOfOwnStockDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of acquisition and repurchases of own stock.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AcquisitionOfOwnStockDiscussion' xlink:to='lab_AcquisitionOfOwnStockDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:label='loc_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of equity instruments received from partners.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:to='lab_EffectsOfEquityInstrumentsBeingIssuedOrReceivedFromPartnersDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ExposureForAsbestosTreatmentCostsDiscussion' xlink:label='loc_ExposureForAsbestosTreatmentCostsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ExposureForAsbestosTreatmentCostsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of exposure to asbestos treatment costs.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ExposureForAsbestosTreatmentCostsDiscussion' xlink:to='lab_ExposureForAsbestosTreatmentCostsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ImpactOfInflationDiscussion' xlink:label='loc_ImpactOfInflationDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ImpactOfInflationDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of the impact of inflation.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ImpactOfInflationDiscussion' xlink:to='lab_ImpactOfInflationDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ChangesToPensionPlansAndImpactDiscussion' xlink:label='loc_ChangesToPensionPlansAndImpactDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ChangesToPensionPlansAndImpactDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of changes to pension plans.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesToPensionPlansAndImpactDiscussion' xlink:to='lab_ChangesToPensionPlansAndImpactDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AnticipatedCashFlowDiscussion' xlink:label='loc_AnticipatedCashFlowDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AnticipatedCashFlowDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of anticipated cash flows.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AnticipatedCashFlowDiscussion' xlink:to='lab_AnticipatedCashFlowDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_DividendsDiscussion' xlink:label='loc_DividendsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_DividendsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of dividends declared and paid.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DividendsDiscussion' xlink:to='lab_DividendsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_FeesOfIndependentAuditorsDiscussion' xlink:label='loc_FeesOfIndependentAuditorsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_FeesOfIndependentAuditorsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of fees paid to independent auditors.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FeesOfIndependentAuditorsDiscussion' xlink:to='lab_FeesOfIndependentAuditorsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:label='loc_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of changes in, and disagreements with, independent accountants.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:to='lab_ChangesInAndDisagreementsWithAccountantsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ManagementInformationDiscussion' xlink:label='loc_ManagementInformationDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ManagementInformationDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of management information systems and processes.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ManagementInformationDiscussion' xlink:to='lab_ManagementInformationDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:label='loc_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of additional factors that may affect future results.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:to='lab_AdditionalFactorsThatMayAffectFutureResultsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_ForwardLookingStatementsDiscussion' xlink:label='loc_ForwardLookingStatementsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_ForwardLookingStatementsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis disclaimer of forward looking statements.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ForwardLookingStatementsDiscussion' xlink:to='lab_ForwardLookingStatementsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:label='loc_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management's discussion and analysis of the consolidated statement of income.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:to='lab_AnalysisOfConsolidatedStatementOfIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_FinancialConditionDiscussion' xlink:label='loc_FinancialConditionDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_FinancialConditionDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of financial condition.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_FinancialConditionDiscussion' xlink:to='lab_FinancialConditionDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_AssetQualityDiscussion' xlink:label='loc_AssetQualityDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_AssetQualityDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of asset quality.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AssetQualityDiscussion' xlink:to='lab_AssetQualityDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_DepositsAndOtherSourcesOfFundsDiscussion' xlink:label='loc_DepositsAndOtherSourcesOfFundsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_DepositsAndOtherSourcesOfFundsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of deposits and other sources of funds.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DepositsAndOtherSourcesOfFundsDiscussion' xlink:to='lab_DepositsAndOtherSourcesOfFundsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_LoansDiscussion' xlink:label='loc_LoansDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_LoansDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of loans.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_LoansDiscussion' xlink:to='lab_LoansDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_NonperformingAssetsDiscussion' xlink:label='loc_NonperformingAssetsDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_NonperformingAssetsDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of nonperforming assets.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NonperformingAssetsDiscussion' xlink:to='lab_NonperformingAssetsDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_NetInterestIncomeDiscussion' xlink:label='loc_NetInterestIncomeDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_NetInterestIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of net interest income.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NetInterestIncomeDiscussion' xlink:to='lab_NetInterestIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_NoninterestIncomeDiscussion' xlink:label='loc_NoninterestIncomeDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_NoninterestIncomeDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of non-interest income.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NoninterestIncomeDiscussion' xlink:to='lab_NoninterestIncomeDiscussion' xlink:type='arc' />
<link:loc xlink:href='mda-2008-03-31.xsd#mda_NoninterestExpenseDiscussion' xlink:label='loc_NoninterestExpenseDiscussion' xlink:type='locator' />
<link:label xlink:label='lab_NoninterestExpenseDiscussion' xlink:role='http://www.xbrl.org/2003/role/documentation' xlink:type='resource' xml:lang='en-US'>Management discussion and analysis of non-interest expenses.</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_NoninterestExpenseDiscussion' xlink:to='lab_NoninterestExpenseDiscussion' xlink:type='arc' />
</link:labelLink>
</link:linkbase>
