Nguyễn Hữu, T., Nguyễn Xuân, M., Hà Văn, Q., Phạm Thị Thu, H., Trần Văn Quốc, T., Bùi Chí, N., Tạ Quế, P., Nguyễn Xuân, T., Nguyễn Ngọc, Á., & Nguyễn Huyền, N. (2025). A CASE REPORT: MANAGEMENT OF SEVERE UPPER GASTROINTESTINAL BLEEDING FROM A DUODENAL BULB ULCER USING AN OTSC (THE OVER-THE-SCOPE CLIP) AFTER FAILURE OF CONVENTIONAL HEMOSTATIC METHODS. Vietnam Medical Journal, 553(1). https://doi.org/10.51298/vmj.v553i1.15237