title: Multiple drug use among marijuana smokers in eastern Canada.
mesh_terms: D000293:Adolescent; D000328:Adult; D001463:Barbiturates; D002170:Canada; D002188:Cannabis; D002648:Child; D004335:Drug and Narcotic Control; D000431:Ethanol; D005260:Female; D003932:Heroin; D006801:Humans; D007880:Legislation, Drug; D008238:Lysergic Acid Diethylamide; D008297:Male; D009892:Opium; D010947:Plants, Toxic; D012907:Smoking; D012919:Social Behavior; D013334:Students; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000209:etiology; D011795:Surveys and Questionnaires; D014026:Nicotiana; D014149:Tranquilizing Agents
chemical_list: D001463:Barbiturates; D014149:Tranquilizing Agents; D000431:Ethanol; D003932:Heroin; D009892:Opium; D008238:Lysergic Acid Diethylamide