Prevention of chronic lung disease.
D000397:Air Pollution; D001991:Bronchitis / Q000145:classification / Q000517:prevention & control; D002908:Chronic Disease; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology / Q000517:prevention & control*; D009784:Occupational Diseases; D011656:Pulmonary Emphysema / Q000145:classification / Q000517:prevention & control; D012907:Smoking / Q000150:complications