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D000328:Adult; D000367:Age Factors; D000368:Aged; D001824:Body Constitution; D001991:Bronchitis / Q000150:complications / Q000453:epidemiology* / Q000209:etiology; D002170:Canada; D002908:Chronic Disease; D003327:Coronary Disease / Q000209:etiology; D003371:Cough / Q000209:etiology; D006469:Hemoptysis / Q000209:etiology; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology; D008297:Male; D008875:Middle Aged; D009790:Occupations; D011656:Pulmonary Emphysema / Q000209:etiology; D012129:Respiratory Function Tests; D012131:Respiratory Insufficiency / Q000209:etiology; D012907:Smoking / Q000150:complications