D Majeed, Pshtewan, and Karim Jwan Saleh Khoshnaw. 2020. “Seroprevalence of Helicobacter Pylori Infection Among Patients With Gastroduodenal Disorders in Erbil City ”. Diyala Journal of Medicine 18 (1):91-101. https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/538.