<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="shr-procedure-AmountOrSize-extension" />
  <text>
    <status value="generated" />
    <div xmlns="http://www.w3.org/1999/xhtml">
      <p>
        <b>SHR AmountOrSize Extension</b>
      </p>
      <p>The quantity of specimen collected</p>
    </div>
  </text>
  <url value="http://standardhealthrecord.org/fhir/StructureDefinition/shr-procedure-AmountOrSize-extension" />
  <identifier>
    <system value="http://standardhealthrecord.org" />
    <value value="shr.procedure.AmountOrSize" />
  </identifier>
  <version value="0.0.1" />
  <name value="SHR AmountOrSize Extension" />
  <title value="SHR AmountOrSize Extension" />
  <status value="draft" />
  <date value="2017-12-20" />
  <publisher value="The MITRE Corporation: Standard Health Record Collaborative" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="http://standardhealthrecord.org" />
    </telecom>
  </contact>
  <description value="The quantity of specimen collected" />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="*" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension:amountorsize">
      <path value="Extension" />
      <short value="SHR AmountOrSize Extension" />
      <definition value="The quantity of specimen collected" />
      <min value="0" />
      <max value="*" />
    </element>
    <element id="Extension:amountorsize.extension:extension">
      <path value="Extension.extension" />
      <sliceName value="extension" />
      <max value="0" />
    </element>
    <element id="Extension:amountorsize.url">
      <path value="Extension.url" />
      <type>
        <code value="uri" />
      </type>
      <fixedUri value="http://standardhealthrecord.org/fhir/StructureDefinition/shr-procedure-AmountOrSize-extension" />
    </element>
    <element id="Extension:amountorsize.valueReference">
      <path value="Extension.valueReference" />
      <min value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://standardhealthrecord.org/fhir/StructureDefinition/shr-core-SimpleQuantity" />
      </type>
    </element>
  </differential>
</StructureDefinition>