title: The natural history of allergic bronchitis.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology; D001249:Asthma / Q000276:immunology; D001991:Bronchitis / Q000276:immunology*; D002908:Chronic Disease; D006801:Humans; D011656:Pulmonary Emphysema / Q000276:immunology; D012130:Respiratory Hypersensitivity