CHARACTERISTICS OF MENTAL DISORDERS AMONG PATIENTS RECEIVING METHADONE TREATMENT AT THE HUNG YEN CENTER FOR DISEASE CONTROL, FACILITY 2 AND ASSOCIATED FACTORS. YHCĐ [Internet]. 2026 July 6 [cited 2026 Sept. 9];67(CĐ8-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5679