title: Six years of cross-sectional surveys of student drug use in Toronto.
mesh_terms: D000124:Achievement; D000293:Adolescent; D000367:Age Factors; D000428:Alcohol Drinking; D001463:Barbiturates; D002170:Canada; D002188:Cannabis; D005260:Female; D006213:Hallucinogens; D006801:Humans; D008238:Lysergic Acid Diethylamide; D008297:Male; D009892:Opium; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology; D012959:Socioeconomic Factors; D013334:Students; D019966:Substance-Related Disorders / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D014149:Tranquilizing Agents
chemical_list: D001463:Barbiturates; D006213:Hallucinogens; D014149:Tranquilizing Agents; D009892:Opium; D008238:Lysergic Acid Diethylamide