Implementing a national study of a new maintenance drug.
D000284:Administration, Oral; D001291:Attitude of Health Personnel; D004341:Drug Evaluation; D004353:Drug Evaluation, Preclinical; D006556:Heroin Dependence / Q000534:rehabilitation*; D006801:Humans; D007258:Informed Consent; D008691:Methadone / Q000031:analogs & derivatives*; D008692:Methadyl Acetate / Q000008:administration & dosage / Q000627:therapeutic use*; D010349:Patient Compliance; D012107:Research Design; D014481:United States; D014486:United States Food and Drug Administration
D008692:Methadyl Acetate; D008691:Methadone