Some factors affecting age of walking in a mentally retarded population.
D000293:Adolescent; D000367:Age Factors; D002547:Cerebral Palsy; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome; D005260:Female; D005684:Gait; D006801:Humans; D007223:Infant; D008607:Intellectual Disability; D007360:Intelligence; D008297:Male; D011581:Psychological Tests