Multi-level predictors of psychological problems among methadone maintenance treatment patients in difference types of settings in Vietnam
Abstract Background Methadone, a long-acting opioid agonist maintenance treatment (MMT) is used to treat opioid addiction by preventing opioid withdrawal and reducing cravings.However, it is important to note that mental conditions may persist, or even remain undetected while methadone maintenance treatment is ongoing.This study aimed to examine th