The epidemiology of drug use in three Canadian cities.
D000293:Adolescent; D002170:Canada; D002188:Cannabis; D000431:Ethanol; D005260:Female; D006801:Humans; D008297:Male; D010947:Plants, Toxic; D012737:Sex Factors; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014026:Nicotiana
D000431:Ethanol