Affiliation: | aCurrent affiliations: Department of Gastroenterology (N.O., M.N., H.T., K.M., T.Y., M.I., H.K., A.I., O.W., T.A., H.G.), Nagoya University Graduate School of Medicine; Department of Endoscopy (R.M., Y.H.), Nagoya University Hospital, Nagoya, Japan |