Nguyễn Hữu, Thành, Mười Nguyễn Xuân, Quốc Hà Văn, Hương Phạm Thị Thu, Thịnh Trần Văn Quốc, Nam Bùi Chí, Phương Tạ Quế, Thủy Nguyễn Xuân, Ánh Nguyễn Ngọc, and Nhung Nguyễn Huyền. “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, no. 1 (August 28, 2025). Accessed August 13, 2026. https://tapchiyhocvietnam.vn/index.php/vmj/article/view/15237.