title: Twins with clefts.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002972:Cleft Palate / Q000235:genetics*; D004200:Diseases in Twins / Q000151:congenital*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male