Vildan TAŞKIN, et al. “The Significance of Corpus Anterior Wall Ulcers on Morbidity and Mortality of Patients With Upper Gastrointestinal Bleeding”. Turkish Journal of Gastroenterology, vol. 14, no. 2, July 2019, pp. 111-4, https://tjg.avesjournals.com/index.php/tjg/article/view/1842.