description: This cross-version extension represents Citation.citedArtifact.publicationForm.issue from http://hl7.org/fhir/StructureDefinition/Citation|5.0.0 for use in FHIR R4B. package_name: hl7.fhir.uv.xver-r5.r4b derivation: constraint name: Ext_R5_Citation_ci_pu_issue type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-Citation.citedArtifact.publicationForm.issue'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Issue, part or supplement of journal or other collection in which the article is published choices: [valueString] index: 2 valueString: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: string short: Issue, part or supplement of journal or other collection in which the article is published choiceOf: value index: 3 package_version: 0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-Citation.citedArtifact.publicationForm.issue base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0 version: 0.0.1-snapshot-2 required: [url]