Soomro, R. A. ., M. . Kaleem, R. A. . Qazi, F. . Irshad, M. . Zafar, and M.-. ul-Islam. “Significance of Various Diagnostic Methods for the Detection of Helicobacter Pylori Infection”. Journal of Liaquat University of Medical & Health Sciences, vol. 21, no. 02, June 2022, pp. 126-30, http://ojs.lumhs.edu.pk/index.php/jlumhs/article/view/937.