Manimaran, R., and A. Boj. “Seroprevalence of Helicobacter Pylori in Patients With Symptoms of Upper Gastro Intestinal Tract at a Tertiary Care Hospital”. International Journal of Research in Medical Sciences, vol. 4, no. 11, Dec. 2016, pp. 4945-8, doi:10.18203/2320-6012.ijrms20163796.