title: Methadone treatment: views of program directors.
mesh_terms: D000328:Adult; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000188:drug therapy* / Q000628:therapy; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D009042:Motivation; D009519:New York City
chemical_list: D008691:Methadone