title: Philosophy and status of NAS CENA study.
mesh_terms: D000047:Academies and Institutes; D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D006801:Humans; D009271:Naltrexone / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000627:therapeutic use*; D010349:Patient Compliance; D010352:Patient Dropouts; D012107:Research Design; D019966:Substance-Related Disorders / Q000534:rehabilitation*
chemical_list: D009292:Narcotic Antagonists; D009271:Naltrexone