<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="phenotype" />
  <meta>
    <lastUpdated value="2020-04-17T20:05:07.906+00:00" />
  </meta>
  <url value="http://fhir.kids-first.io/StructureDefinition/phenotype" />
  <version value="0.1.0" />
  <name value="phenotype" />
  <title value="Phenotype" />
  <status value="draft" />
  <fhirVersion value="4.0.0" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation">
      <path value="Observation" />
    </element>
    <element id="Observation.extension">
      <path value="Observation.extension" />
    </element>
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      <path value="Observation.extension" />
      <sliceName value="age-at-event" />
      <sliceIsConstraining value="false" />
      <label value="age_at_event" />
      <short value="Age time of event" />
      <definition value="Age (in days since birth) of the Participant at time of event" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="http://fhir.kids-first.io/StructureDefinition/age-at-event" />
      </type>
      <mustSupport value="true" />
      <isModifier value="false" />
    </element>
    <element id="Observation.identifier">
      <path value="Observation.identifier" />
      <mustSupport value="true" />
    </element>
    <element id="Observation.basedOn">
      <path value="Observation.basedOn" />
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      <max value="0" />
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      <path value="Observation.encounter" />
      <max value="0" />
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    <element id="Observation.effective[x]">
      <path value="Observation.effective[x]" />
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    </element>
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      <max value="0" />
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      <max value="0" />
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    <element id="Observation.note">
      <path value="Observation.note" />
      <max value="0" />
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    <element id="Observation.bodySite">
      <path value="Observation.bodySite" />
      <max value="0" />
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      <max value="0" />
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      <max value="0" />
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      <max value="0" />
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      <max value="0" />
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      <path value="Observation.component" />
      <max value="0" />
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  </differential>
</StructureDefinition>