Epidemiology of institutionalized mental retardates.
D002674:Child, Institutionalized; D004522:Educational Status; D004812:Epidemiologic Methods; D005006:Ethnicity; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology*; D007360:Intelligence; D008297:Male; D009790:Occupations