The influence of Canadian addicts on heroin addiction in the United Kingdom.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002170:Canada; D004641:Emigration and Immigration; D005260:Female; D003932:Heroin; D006801:Humans; D008019:Life Style; D008131:London; D008297:Male; D019966:Substance-Related Disorders / Q000453:epidemiology*; D006113:United Kingdom
D003932:Heroin