title: Cystic fibrosis in southern Iran.
mesh_terms: D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007492:Iran; D008297:Male; D011446:Prospective Studies; D012189:Retrospective Studies