Infants' legs and the sleeping position.
D005413:Flatfoot / Q000175:diagnosis*; D005528:Foot / Q000002:abnormalities*; D005532:Foot Deformities, Congenital; D006801:Humans; D007223:Infant; D007866:Leg / Q000002:abnormalities*; D012890:Sleep
FLATFOOT/diagnosis; FOOT/abnormalities; LEG/abnormalities