Niwa Yasumasa, Kumashiro Ryukichi, Sugiyama Toshiro, Hyodo Ichinosuke, Nasu Junichirou, Matsuura Bunzo, Yamaguchi Koji, Nakayama Takeo, Morizane Toshio, Kage Masayoshi, Kadoya Masumi
Department of Endoscopy, Aichi Cancer Center Hospital, Japan.
Nihon Shokakibyo Gakkai Zasshi. 2013 May;110(5):796-800.