[Familial incidence of congenital choanal atresia].
D005260:Female; D005826:Genetics, Medical; D006801:Humans; D008297:Male; D009305:Nasopharynx / Q000002:abnormalities*; D009666:Nose / Q000002:abnormalities*
Zur familiären Häufung der angeborenen Choanalatresie.