Mental subnormality and its prevention--the Singapore experience.
D002648:Child; D002675:Child, Preschool; D000013:Congenital Abnormalities / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D012846:Singapore