Nanda, Rajesh A., and Melvin George. “Prevalence of Duodenal Ulcer and Associated Helicobacter Pylori Infection in Chronic Liver Disease”. International Journal of Research in Medical Sciences 8, no. 12 (November 27, 2020): 4442–4446. Accessed October 14, 2025. https://www.msjonline.org/index.php/ijrms/article/view/9091.