title: Epidemiology and taxonomy in mental retardation.
abstract: The present state of epidemiological research in relation to mental retardation is described, with particular respect to taxonomic issues. A comprehensive taxonomy is proposed, and the problems of establishing it discussed.
authors.affiliation: South Cumbria Health Authority, England.
authors.forename: T
authors.initials: T
authors.lastname: Fryers
mesh_terms: D002648:Child; D006801:Humans; D008607:Intellectual Disability / Q000145:classification / Q000453:epidemiology*; D007859:Learning Disabilities / Q000145:classification / Q000453:epidemiology; D009626:Terminology as Topic