D Majeed, Pshtewan, and Karim Jwan Saleh Khoshnaw. “Seroprevalence of Helicobacter Pylori Infection Among Patients With Gastroduodenal Disorders in Erbil City ”. Diyala Journal of Medicine, vol. 18, no. 1, Apr. 2020, pp. 91-101, https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/538.