description: This cross-version extension represents ResearchStudy.principalInvestigator from http://hl7.org/fhir/StructureDefinition/ResearchStudy|4.0.1 for use in FHIR R5.
package_name: rs/hl7.fhir.uv.xver
derivation: constraint
name: ext_R4_ResearchStudy_principalInvestigator
type: Extension
elements:
  value:
    base: {path: 'Extension.value[x]'}
    short: Researcher who oversees multiple aspects of the study
    choices: [valueReference]
    index: 1
  valueReference:
    short: Researcher who oversees multiple aspects of the study
    refers: ['http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/PractitionerRole']
    type: Reference
    base: {path: 'Extension.value[x]'}
    choiceOf: value
    index: 2
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchStudy.principalInvestigator'}
    type: uri
    index: 3
package_version: r4.r5-0.0.1-snapshot-1
class: extension
kind: complex-type
url: http://hl7.org/fhir/4.0/StructureDefinition/extension-ResearchStudy.principalInvestigator
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]