Institution: | a Division of Host-Parasite Interaction, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, 4-6-1, Shirokanedai Minato-ku, Tokyo 108-8639, Japan b Department of Gastroenterology, Faculty of Medicine, University of Tokyo, Tokyo, Japan c 1st Department of Pathology, Fujita Health University School of Medicine, Aichi, Japan d Second Department of Internal Medicine, Wakayama Medical College, Wakayama, Japan |