Nikpour, S. .; Gachkar, L. .; Rezaei, R.; Salehi, M. .; Futuhi, F. .; Sabeti, S. .; Shabani, M. .; Erfanifar, A. . Prevalence of Helicobacter Pylori Infection and Its Associated Factors in Patients With COVID-19. Novel Biomed 2022, 10, 167-177.