Epidemiologic factors in etiology of chronic respiratory disease.
D000328:Adult; D002140:California; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology*; D008173:Lung Diseases, Obstructive / Q000453:epidemiology / Q000209:etiology; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000150:complications; D012129:Respiratory Function Tests; D012130:Respiratory Hypersensitivity / Q000150:complications; D012141:Respiratory Tract Infections / Q000150:complications; D012907:Smoking / Q000150:complications