Sharma, P., K. K. Kaul, M. Mahajan, and P. Gupta. “Histopathological Spectrum of Various Gastroduodenal Lesions in North India and Prevalence of Helicobacter Pylori Infection in These Lesions: A Prospective Study”. International Journal of Research in Medical Sciences, vol. 3, no. 5, Jan. 2017, pp. 1236-41, https://www.msjonline.org/index.php/ijrms/article/view/1474.