<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-phsd-wait-time-Duration" />
  <name value="PHSDWaitTimeDuration" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <type value="Duration" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Duration" />
  <derivation value="constraint" />
  <differential>
    <element id="Duration.value">
      <path value="Duration.value" />
      <min value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Duration.unit">
      <path value="Duration.unit" />
      <min value="1" />
      <fixedString value="days" />
      <mustSupport value="true" />
    </element>
    <element id="Duration.system">
      <path value="Duration.system" />
      <min value="1" />
      <fixedUri value="http://unitsofmeasure.org" />
      <mustSupport value="true" />
    </element>
    <element id="Duration.code">
      <path value="Duration.code" />
      <min value="1" />
      <fixedCode value="d" />
      <mustSupport value="true" />
      <binding>
        <strength value="required" />
        <description value="A unit of time (units from UCUM)." />
        <valueSet value="http://hl7.org/fhir/ValueSet/units-of-time" />
      </binding>
    </element>
  </differential>
</StructureDefinition>