Cigarette smoking and the lungs.
D000402:Airway Obstruction / Q000503:physiopathology; D000403:Airway Resistance; D001991:Bronchitis / Q000209:etiology; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008175:Lung Neoplasms / Q000209:etiology; D011656:Pulmonary Emphysema / Q000209:etiology; D012129:Respiratory Function Tests; D012907:Smoking / Q000503:physiopathology*