title: EMCDDA annual report 2009: cocaine and heroin maintain firm hold on Europe's drug scene.
authors: L
authors: L
authors: Wiessing
authors: D
authors: D
authors: Olszewski
authors: D
authors: D
authors: Klempová
authors: J
authors: J
authors: Vicente
authors: P
authors: P
authors: Griffiths
mesh_terms: D000437:Alcoholism / Q000453:epidemiology; D000847:Annual Reports as Topic; D019970:Cocaine-Related Disorders / Q000453:epidemiology*; D005060:Europe / Q000453:epidemiology; D015658:HIV Infections / Q000453:epidemiology; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D002189:Marijuana Abuse / Q000453:epidemiology; D011159:Population Surveillance; D015819:Substance Abuse, Intravenous / Q000453:epidemiology; D055815:Young Adult