title: Chronic obstructive pulmonary disease.
mesh_terms: D001249:Asthma / Q000209:etiology / Q000628:therapy; D001987:Bronchiectasis / Q000473:pathology; D001991:Bronchitis / Q000209:etiology; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000628:therapy*; D011656:Pulmonary Emphysema / Q000209:etiology / Q000628:therapy; D014481:United States