title: Cystic-fibrosis heterozygosity in childhood bronchial asthma.
mesh_terms: D001249:Asthma / Q000150:complications* / Q000209:etiology; D001965:Bromides; D002648:Child; D002712:Chlorides / Q000032:analysis; D003550:Cystic Fibrosis / Q000235:genetics*; D006579:Heterozygote; D006801:Humans; D012964:Sodium / Q000032:analysis; D013542:Sweat / Q000032:analysis
chemical_list: D001965:Bromides; D002712:Chlorides; D012964:Sodium