AL Musawi, Ibtisam H. N., et al. “Prevalence of Helicobacter Pylori As Coinfection in Iraqi Patients Infected With Viral Hepatitis Types”. World Journal of Experimental Biosciences, vol. 4, no. 2, July 2016, pp. 108-11, https://wjebio.com/index.php/journal/article/view/95.