A way to classify chronic obstructive pulmonary diseases.
D001249:Asthma / Q000145:classification; D001991:Bronchitis / Q000145:classification; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000145:classification* / Q000000981:diagnostic imaging; D011656:Pulmonary Emphysema / Q000145:classification; D011859:Radiography; D012129:Respiratory Function Tests