<status value="active" /> <date value="2016-12-12T16:29:39.343+00:00" /> <publisher value="Nictiz" /> <contact> <name value="Nictiz" /> <telecom> <system value="email" /> <value value="info@nictiz.nl" /> <use value="work" /> </telecom> </contact> <description value="The duration of the medication usage" /> <copyright value="CC0" /> <fhirVersion value="3.0.1" /> <kind value="primitive-type" /> <abstract value="false" /> <contextType value="resource" /> <context value="MedicationRequest" /> <context value="MedicationStatement" /> <context value="MedicationStatement.effectivePeriod" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://nictiz.nl/fhir/StructureDefinition/zib-MedicationUse-Duration" /> </element> <element id="Extension.valueDuration"> <path value="Extension.valueDuration" /> <short value="UsageDuration" /> <alias value="Gebruiksduur" /> <type> <code value="Duration" /> </type> </element> </differential> </StructureDefinition>