description: This cross-version extension represents Signature.who[x] from http://hl7.org/fhir/StructureDefinition/Signature|3.0.2 for use in FHIR R4B.
package_name: hl7.fhir.uv.xver-r3.r4b
derivation: constraint
name: ext_R3_Signature_who
type: Extension
elements:
  value:
    base: {path: 'Extension.value[x]'}
    short: Who signed
    choices: [valueUri, valueReference]
    index: 1
  valueUri:
    base: {path: 'Extension.value[x]'}
    type: uri
    short: Who signed
    choiceOf: value
    index: 2
  valueReference:
    short: Who signed
    refers: ['http://hl7.org/fhir/StructureDefinition/Device', 'http://hl7.org/fhir/StructureDefinition/Organization', 'http://hl7.org/fhir/StructureDefinition/Patient', 'http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson']
    type: Reference
    base: {path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-Signature.who'}
    type: uri
    index: 4
package_version: 0.0.1-snapshot-1
class: extension
kind: complex-type
url: http://hl7.org/fhir/3.0/StructureDefinition/extension-Signature.who
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]