description: The period in which the medication is/was taken package_name: nictiz.fhir.nl.stu3.zib2017 derivation: constraint name: Zib Medication Period Of Use type: Extension elements: url: pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/zib-Medication-PeriodOfUse'} index: 0 valuePeriod: type: Period index: 1 slicing: slices: valuePeriod: match: {} schema: {type: Period, index: 1} package_version: 2.2.15 class: extension kind: complex-type url: http://nictiz.nl/fhir/StructureDefinition/zib-Medication-PeriodOfUse base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.2