Ahmed Taymour Algahiny; Ishan Antony; Fareeha Akram; Abdullah Ahmed Almesri; Iqra Zulfiqar; Abdulhamid Diab. RISK FACTORS IN NON-VARICEAL AND NON-MALIGNANCY UPPER GASTROINTESTINAL BLEEDING IN THE PATIENTS UNDERGOING SURGERY. J Popl Ther Clin Pharmacol 2023, 30, 498-505.