Emphysema.
D003644:Death Certificates; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D011656:Pulmonary Emphysema / Q000175:diagnosis / Q000453:epidemiology / Q000266:history; D012129:Respiratory Function Tests / Q000266:history; D014481:United States