Clefts of the lip and palate in twins.
D000818:Animals; D002648:Child; D002971:Cleft Lip / Q000209:etiology / Q000235:genetics*; D002972:Cleft Palate / Q000209:etiology / Q000235:genetics*; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008445:Maxillofacial Development; D003765:Models, Dental