T., Kemparaj, and Ashika Bagur. “Presence of Helicobacter Pylori Infection in Gastroduodenal Perforations”. International Surgery Journal 7, no. 6 (May 26, 2020): 1908–1912. Accessed November 8, 2025. https://www.ijsurgery.com/index.php/isj/article/view/5891.