[Choanal imperforation in childhood. Its importance and treatment].
D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009305:Nasopharynx / Q000002:abnormalities*; D009666:Nose / Q000002:abnormalities*
Imperfuração coanal na criança. Sua importância e tratamento.