Naeem Jan, Atta Muhammad Khan, Muhammad Iltaf. “The Frequency of H. Pylori Infection Among Patients Experiencing Digestive Endoscopy a Multi Center Study”. Pakistan Journal of Medical & Health Sciences 17, no. 02 (March 31, 2023): 428. Accessed November 13, 2024. https://mail.pjmhsonline.com/index.php/pjmhs/article/view/4341.