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Shimoyama, Tadashi, Shinsaku Fukuda, Fumika Nakasato, Tetsuro Yoshimura, Tatsuya Mikami, and Akihiro Munakata. "Relation of CagA Seropositivity to CagPAI Phenotype and Histological Grade of Gastritis in Patients With Helicobacter Pylori Infection." World J Gastroenterol 2005.

Shimoyama, Tadashi, et al. "Relation of CagA Seropositivity to CagPAI Phenotype and Histological Grade of Gastritis in Patients With Helicobacter Pylori Infection." World J Gastroenterol 2005.