{description: Codes for the stage in the progression of a therapy from initial experimental use in humans in clinical trials to post-market evaluation., package_name: hl7.fhir.uv.extensions, name: ResearchStudyRegistrationActivity, type: null, package_version: 5.2.0-ballot, class: unknown, kind: null, url: 'http://hl7.org/fhir/research-study-registration-activity', version: 5.2.0-ballot}