title: Study of methadone terminations.
mesh_terms: D005006:Ethnicity; D005260:Female; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D009519:New York City; D010342:Patient Acceptance of Health Care; D011647:Puerto Rico / Q000208:ethnology
chemical_list: D008691:Methadone