The heroin and barbiturate epidemics in Boston.
D001463:Barbiturates / Q000627:therapeutic use; D001900:Boston; D003932:Heroin / Q000600:supply & distribution; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D019966:Substance-Related Disorders / Q000188:drug therapy / Q000453:epidemiology*
D001463:Barbiturates; D003932:Heroin