Research on methadone maintenance treatment.
D000293:Adolescent; D000328:Adult; D005069:Evaluation Studies as Topic; D003932:Heroin; D006801:Humans; D008691:Methadone / Q000008:administration & dosage / Q000627:therapeutic use*; D009021:Morphine Dependence / Q000188:drug therapy*; D009519:New York City; D012040:Regional Health Planning; D012106:Research; D012109:Research Support as Topic
D003932:Heroin; D008691:Methadone