title: The genetical contribution of mental subnormality in Singapore children.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000175:diagnosis / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D011296:Prenatal Diagnosis; D012846:Singapore