title: Heroin reaches the well-to-do population.
mesh_terms: D000293:Adolescent; D000328:Adult; D006556:Heroin Dependence / Q000191:economics / Q000453:epidemiology* / Q000517:prevention & control* / Q000534:rehabilitation; D006801:Humans; D009518:New York / Q000453:epidemiology; D012923:Social Class; D016320:Substance Abuse Treatment Centers / Q000706:statistics & numerical data