Smoking and health.
D000293:Adolescent; D000328:Adult; D000818:Animals; D002318:Cardiovascular Diseases / Q000209:etiology*; D003327:Coronary Disease / Q000401:mortality; D006801:Humans; D008171:Lung Diseases / Q000209:etiology*; D008175:Lung Neoplasms / Q000401:mortality; D008875:Middle Aged; D009538:Nicotine / Q000009:adverse effects; D012137:Respiratory System / Q000187:drug effects; D012907:Smoking; D014481:United States
D009538:Nicotine