An 11-year study of cigarette smoking habits of students entering Drexel University, Philadelphia.
D000293:Adolescent; D000367:Age Factors; D001290:Attitude; D005260:Female; D006331:Heart Diseases / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000209:etiology; D008297:Male; D010290:Parents; D010414:Pennsylvania; D012737:Sex Factors; D012907:Smoking / Q000150:complications / Q000453:epidemiology*; D013334:Students; D013997:Time Factors; D014495:Universities