Sheranov Adkham Mamadiyarovich. “Types of Chronic Gastric and Duodenal Ulcer Disease, Complications, Incidence and Modern Methods of Examination”. International Journal of Alternative and Contemporary Therapy, vol. 3, no. 2, Feb. 2025, pp. 23-27, https://medicaljournals.eu/index.php/IJACT/article/view/1555.