Yahya, Nizar B. “Helicobacter Pylori Seropositivity in Children in Duhok City, Iraq”. Science Journal of University of Zakho 6, no. 3 (September 30, 2018): 82–87. Accessed March 28, 2024. https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/508.