description: This cross-version extension represents Evidence.studyType from http://hl7.org/fhir/StructureDefinition/Evidence|4.3.0 for use in FHIR R4. package_name: hl7.fhir.uv.xver derivation: constraint name: Ext_R4B_Evidence_studyType type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.3/StructureDefinition/extension-Evidence.studyType'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: The type of study that produced this evidence choices: [valueCodeableConcept] index: 2 valueCodeableConcept: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: CodeableConcept short: The type of study that produced this evidence choiceOf: value index: 3 package_version: r4b.r4-0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/4.3/StructureDefinition/extension-Evidence.studyType base: http://hl7.org/fhir/StructureDefinition/Extension|4.0.1 version: 0.0.1-snapshot-2 required: [url]