description: The duration of the medication usage package_name: nictiz.fhir.nl.stu3.zib2017 derivation: constraint name: Zib MedicationUse Duration type: Extension elements: url: pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/zib-MedicationUse-Duration'} index: 0 valueDuration: type: Duration short: UsageDuration index: 1 slicing: slices: valueDuration: match: {} schema: {type: Duration, short: UsageDuration, index: 1} package_version: 2.2.4 class: extension kind: complex-type url: http://nictiz.nl/fhir/StructureDefinition/zib-MedicationUse-Duration base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.1