OKÇU, N. (1994) “FREQUANCY OF HELICOBACTER PYLORI IN CASES WITH NONSPESIFIC GASTRITIS IN ERZURUM REGION”, Turkish Journal of Gastroenterology, 5(2), pp. 211–213. Available at: https://www.turkjgastroenterol.org/index.php/tjg/article/view/436 (Accessed: 1 January 2026).