Chasing the dragon and syringe-exchange schemes.
Madden
S
S
D000280:Administration, Inhalation; D003932:Heroin / Q000008:administration & dosage*; D006556:Heroin Dependence / Q000209:etiology*; D006801:Humans; D007275:Injections, Intravenous; D006113:United Kingdom
D003932:Heroin