Abdullaev Khakimjon Makhmudjonovich, et al. “Analysis of Postoperative Complications Following Perforated Duodenal Ulcer and the Impact of Clinical-Surgical Risk Factors”. International Journal of Integrative and Modern Medicine, vol. 3, no. 8, Aug. 2025, pp. 32-36, https://medicaljournals.eu/index.php/IJIMM/article/view/2032.