Outcomes of Methadone and Buprenorphine Maintenance Treatments in Opioid Use Disorder Patients: A Retrospective Cohort Study. - Akbarzadeh, Isa; Gholami, Jaleh; Rahimi-Movaghar, Afarin; Yaseri, Mehdi; Noroozi, Alireza; Ardeshir, Maryam; Yazdani, Kamran (Substance Use & Misuse, 2026)