Heroin abuse in Singapore--a profile and characteristics study.
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012846:Singapore; D012959:Socioeconomic Factors; D013375:Substance Withdrawal Syndrome / Q000453:epidemiology; D019966:Substance-Related Disorders; D013997:Time Factors