title: Naltrexone study guidelines: good vehicle--wrong destination.
mesh_terms: D004341:Drug Evaluation; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D009042:Motivation; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000627:therapeutic use*; D012107:Research Design
chemical_list: D009270:Naloxone; D009271:Naltrexone