{description: Indicates the progression of a study subject through the study milestones., package_name: hl7.fhir.r5.examples, name: ResearchSubjectMilestone, type: null, package_version: 4.2.0, class: unknown, kind: null, url: 'http://terminology.hl7.org/CodeSystem/research-subject-milestone', version: 4.2.0}