title: Chronic obstructive lung disease in Singapore.
mesh_terms: D000368:Aged; D000402:Airway Obstruction / Q000453:epidemiology; D001982:Bronchial Diseases / Q000453:epidemiology; D006332:Cardiomegaly / Q000453:epidemiology; D003371:Cough / Q000453:epidemiology; D004417:Dyspnea / Q000453:epidemiology; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000453:epidemiology; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000139:chemically induced / Q000000981:diagnostic imaging / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009892:Opium; D010995:Pleural Diseases / Q000453:epidemiology; D011656:Pulmonary Emphysema / Q000453:epidemiology; D011859:Radiography; D012129:Respiratory Function Tests; D012846:Singapore; D012907:Smoking / Q000150:complications*; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D009892:Opium