Geographical differences in the prevalence of mental deficiency.
D004641:Emigration and Immigration; D005260:Female; D006778:Hospitals, Psychiatric; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis / Q000453:epidemiology*; D007360:Intelligence; D008297:Male; D008423:Maternal Age; D011156:Population Density; D012424:Rural Population; D013195:Stanford-Binet Test; D013548:Sweden; D014505:Urban Population