[Epidemiology of profound mental retardation in children in Poland. Diagnostic methods].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods / Q000592:standards*; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis / Q000453:epidemiology*; D011044:Poland
Epidemiologia głebszego upośledzneia umysłowego u dzieci w Polsce.