{description: The stage in the progression of a study, package_name: hl7.fhir.r5.core, name: phase, type: token, package_version: 5.0.0-draft-final, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ResearchStudy-phase', version: 5.0.0-draft-final}