F. Rahman, K. Shadia, S. Khatun, M. Mahmud, I. K. Dutta, and J. A. Haq, “Helicobacter pylori CagA seropositivity in adult Bangladeshi patients with peptic ulcer and erosion”, IMC J Med Sci, vol. 14, no. 1, pp. 36–40, Jun. 2020.