<StructureDefinition xmlns="http://hl7.org/fhir">
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir" />
  </extension>
  <url value="https://purl.org/elab/fhir/StructureDefinition/Citation-crew-version1" />
  <name value="Citation" />
  <description value="Holds reference information about the study" />
  <status value="active" />
  <version value="1" />
  <fhirversion value="3.0.0" />
  <date value="2017-08-30T10:24:43.8570561Z" />
  <kind value="resource" />
  <type value="Basic" />
  <derivation value="constraint" />
  <abstract value="false" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Basic" />
  <differential>
    <element id="Basic.extension">
      <path value="Basic.Extension" />
    </element>
    <element id="Basic.extension:Title">
      <path value="Basic.extension" />
      <short value="Title" />
      <definition value="The official title for the overall study or sweep of study" />
      <sliceName value="Title" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Title-crew-version1" />
      </type>
    </element>
    <element id="Basic.extension:AlternativeTitle">
      <path value="Basic.extension" />
      <short value="AlternativeTitle" />
      <definition value="An alternate title by which the study is known/ by which sweep of study is known (if describing study sweep information)" />
      <sliceName value="AlternativeTitle" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/AlternativeTitle-crew-version1" />
      </type>
    </element>
    <element id="Basic.extension:Creator">
      <path value="Basic.extension" />
      <short value="Creator" />
      <definition value="Name of the current Principal Investigator for the study e.g. Prof Iain Buchan, or PI at time of sweep (if describing study sweep information)" />
      <sliceName value="Creator" />
      <min value="1" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Creator-crew-version1" />
      </type>
    </element>
    <element id="Basic.extension:Publisher">
      <path value="Basic.extension" />
      <short value="Publisher" />
      <definition value="Current institution hosting the study or host institution at time of study sweep (if describing study sweep information)" />
      <sliceName value="Publisher" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Publisher-crew-version1" />
      </type>
    </element>
    <element id="Basic.subject">
      <path value="Basic.subject" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>