Serial studies of 100 patients with chronic airway obstruction in London and Chicago.
D001991:Bronchitis / Q000453:epidemiology*; D002641:Chicago; D004417:Dyspnea; D004562:Electrocardiography; D005500:Follow-Up Studies; D006801:Humans; D008131:London; D008168:Lung / Q000000981:diagnostic imaging; D009790:Occupations; D011379:Prognosis; D011656:Pulmonary Emphysema / Q000453:epidemiology*; D011859:Radiography; D012129:Respiratory Function Tests; D012131:Respiratory Insufficiency / Q000453:epidemiology* / Q000401:mortality / Q000503:physiopathology; D013183:Sputum