title: Grappling with the grey evidence.
authors.forename: Anne
authors.initials: A
authors.lastname: O'Hare
mesh_terms: D002648:Child; D002659:Child Development Disorders, Pervasive / Q000209:etiology*; D006801:Humans; D016233:Immunotherapy, Active / Q000009:adverse effects*; D008457:Measles; D009107:Mumps; D012327:RNA Virus Infections / Q000276:immunology / Q000628:therapy*; D012409:Rubella