Mental development of infants with Down's syndrome.
D000223:Adaptation, Psychological; D000367:Age Factors; D002657:Child Development; D004314:Down Syndrome; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008606:Mental Processes; D009043:Motor Activity; D011581:Psychological Tests; D012919:Social Behavior; D013223:Statistics as Topic