Chronic obstructive airways disease.
D002908:Chronic Disease; D004562:Electrocardiography; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000628:therapy; D009784:Occupational Diseases / Q000175:diagnosis*; D011859:Radiography; D012129:Respiratory Function Tests