"End of an epidemic?".
D000293:Adolescent; D006501:Hepatic Encephalopathy / Q000453:epidemiology; D006506:Hepatitis A / Q000453:epidemiology; D006556:Heroin Dependence / Q000453:epidemiology* / Q000628:therapy; D006801:Humans; D007604:Juvenile Delinquency; D009519:New York City; D019966:Substance-Related Disorders / Q000453:epidemiology*