title: Clinical efficacy of naltrexone: a one year follow up.
mesh_terms: D000328:Adult; D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D009270:Naloxone; D009271:Naltrexone