[Some data on mentally deficient children].
D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000453:epidemiology*; D008297:Male; D009426:Netherlands; D012106:Research
Enige gegevens over de zwakzinnige kleuter.