Lookup for FHIR R4B Duration for use in FHIR R5

Source ElementUsageTarget
Duration.idUseElementSameNameDuration.id
Duration.extensionUseElementSameNameDuration.extension
Duration.valueUseElementSameNameDuration.value
Duration.comparatorUseElementSameNameDuration.comparator
Duration.unitUseElementSameNameDuration.unit
Duration.systemUseElementSameNameDuration.system
Duration.codeUseElementSameNameDuration.code