BİLGİN, A. (1992) “UPPER GASTROINTESTINAL TRACT BLEEDING (EVALUATION OF 38 PATIENTS)”, Turkish Journal of Gastroenterology, 3(4), pp. 704–707. Available at: https://www.turkjgastroenterol.org/index.php/tjg/article/view/187 (Accessed: 1 January 2026).