{description: 'The situation in which the undesirable effect may manifest, as a reference', package_name: hl7.fhir.r4b.examples, name: effect-reference, type: reference, package_version: 4.3.0-snapshot1, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ClinicalUseDefinition-effect-reference', version: 4.3.0-snapshot1}