Drug users embrace Vancouver site.
D001955:British Columbia; D003153:Community Health Services / Q000458:organization & administration / Q000706:statistics & numerical data*; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D040261:Harm Reduction; D006801:Humans; D015819:Substance Abuse, Intravenous / Q000821:virology*