[Congenital hip dislocation viewed from studies on twins].
D000328:Adult; D002675:Child, Preschool; D004200:Diseases in Twins / Q000209:etiology*; D005260:Female; D006618:Hip Dislocation, Congenital / Q000209:etiology*; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography