Affiliation: | Department of Gastroenterology (T. Ogawa, J.H., N.F., Y.N., G.K., K.I., T. Obana, Y. Kato, S.K., Y.Y., Y. Kanno), Sendai City Medical Center, Sendai, Japan, First Department of Pathology (T.S.), Iwate Medical University School of Medicine, Morioka, Japan |