M. O. Mohammed, H. H. Bayz, and F. B. Maarouf, “Clinical, Endoscopic and Urea Breath Test Among Dyspeptic Patients Referred to Kurdistan Center for Gastroenterology and Hepatology in Sulaimani”, KJAR, vol. 2, no. 2, pp. 89–95, Jul. 2017, doi: 10.24017/science.2017.2.12.