title: [Risk factors and populations at risk].
authors.forename: G L
authors.initials: GL
authors.lastname: Snider
mesh_terms: D000402:Airway Obstruction / Q000503:physiopathology; D016535:Bronchial Hyperreactivity / Q000503:physiopathology; D005060:Europe; D006801:Humans; D007564:Japan; D008173:Lung Diseases, Obstructive / Q000209:etiology* / Q000503:physiopathology; D015995:Prevalence; D011656:Pulmonary Emphysema / Q000209:etiology / Q000503:physiopathology; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D014481:United States; D019896:alpha 1-Antitrypsin Deficiency / Q000150:complications