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  <xsd:element id="pfe_PercentageOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueInputsLevel1AndLevel3Inputs" name="PercentageOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueInputsLevel1AndLevel3Inputs" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
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</xsd:schema>
</XBRL>