Hansen, M. A., M. A. Ahad, M. H. Rahman, M. S. H. Bhuiyan, and M. A. H. Khan. “Is There Any Association Between CagA+ H. Pylori Infection and Histopathological Types of Gastric Carcinoma”. Medicine Today, vol. 22, no. 2, Oct. 2012, pp. 62-69, doi:10.3329/medtoday.v22i2.12435.