Observations on the pathogenesis of chronic airflow obstruction in smokers: implications for the detection of "early" lung disease.
D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology* / Q000503:physiopathology; D011656:Pulmonary Emphysema / Q000209:etiology / Q000503:physiopathology; D012129:Respiratory Function Tests; D012907:Smoking