title: Voluntary methadone treatment clinic. Two-year study.
mesh_terms: D003156:Community Mental Health Services; D005069:Evaluation Studies as Topic; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D008691:Methadone / Q000627:therapeutic use*; D010349:Patient Compliance; D011613:Psychotherapy; D012917:Social Adjustment
chemical_list: D008691:Methadone