“A Risk Assessment of Gastric Cancer and Precancerous Condition Using Serum Pepsinogen and H. Pylori Antibody Test”. Central Asian Journal of Medical Sciences 9, no. 1 (March 30, 2023): 15–21. Accessed June 22, 2026. https://www.mongoliajol.info/index.php/CAJMS/article/view/3056.