description: This cross-version extension represents AdverseEvent.expectedInResearchStudy from http://hl7.org/fhir/StructureDefinition/AdverseEvent|5.0.0 for use in FHIR R4. package_name: hl7.fhir.uv.xver derivation: constraint name: Ext_R5_AdverseEvent_expectedInResearchStudy type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-AdverseEvent.expectedInResearchStudy'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Considered likely or probable or anticipated in the research study choices: [valueBoolean] index: 2 valueBoolean: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: boolean short: Considered likely or probable or anticipated in the research study choiceOf: value index: 3 package_version: r5.r4-0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-AdverseEvent.expectedInResearchStudy base: http://hl7.org/fhir/StructureDefinition/Extension|4.0.1 version: 0.0.1-snapshot-2 required: [url]