title: Delayed emergence of prone locomotion.
mesh_terms: D000005:Abdomen; D000367:Age Factors; D001766:Blindness / Q000150:complications / Q000151:congenital; D002652:Child Behavior; D003467:Cultural Deprivation; D002658:Developmental Disabilities / Q000209:etiology*; D004777:Environment; D005260:Female; D006801:Humans; D007223:Infant; D007866:Leg; D008124:Locomotion; D008297:Male; D009048:Motor Skills; D010388:Pelvis; D011610:Psychosocial Deprivation; D012409:Rubella / Q000150:complications / Q000151:congenital; D013997:Time Factors