TÜTÜN, U. (2004) “Acute gastrointestinal bleeding due to primary aortoduodenal fistula: Report of two rare cases”, Turkish Journal of Gastroenterology, 15(4), pp. 253–257. Available at: https://turkjgastroenterol.org/index.php/tjg/article/view/1392 (Accessed: 1 January 2026).