YÜCEYAR, H. (2000) “Systemic cellular immune response in Helicobacter pylori associated duodenal ulcer and chronic antral gastritis”, Turkish Journal of Gastroenterology, 11(3), pp. 208–211. Available at: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1075 (Accessed: 1 January 2026).