[Genetic study on infantile cranio-facial pattern by twin method].
D002508:Cephalometry; D002648:Child; D005147:Facial Bones / Q000033:anatomy & histology*; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D008297:Male; D011247:Pregnancy; D012886:Skull / Q000033:anatomy & histology; D014427:Twins