PERFORMANCE OF THE BLATCHFORD SCORE IN PREDICTING OUTCOMES OF UPPER GASTROINTESTINAL BLEEDING DUE TO PEPTIC ULCER DISEASE IN THE EMERGENCY DEPARTMENT, DUC GIANG GENERAL HOSPITAL, 2025. YHCĐ [Internet]. 2026 Apr. 2 [cited 2026 Sept. 8];67(CĐ3-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4722