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Outcomes after methadone maintenance and methadone reduction treatments: two-year follow-up results from the National Treatment Outcome Research Study

Substance AbuseSubstance UseHealth PolicyPsychiatryAddictionAddiction TreatmentOpioid Use DisorderOutcomes ResearchAddiction MedicineMethadone MaintenanceTwo-year Follow-up ResultsRelapse PreventionDrug TreatmentMedicineMethadone Reduction TreatmentsHarm ReductionHealth Services ResearchHealth Sciences