GÜRER, Ahmet, et al. “Upper Gastrointestinal Bleeding Caused by Simultaneous dieulafoy’s Lesion and Pre-Pyloric Peptic Ulceration”. Turkish Journal of Gastroenterology, vol. 16, no. 3, Jan. 2005, pp. 178-9, https://turkjgastroenterol.org/index.php/tjg/article/view/1441.