^○Yasuhito Takeda¹, Shigetsugu Tsuji¹, Ryousuke Ota¹, Hitoshi Omura¹, Hiroyoshi Nakanishi¹, Kunihiro Tsuji¹, Kei Tominaga¹, Naohiro Yoshida¹, Kazuhiro Matsunaga¹, Kenichi Takemura¹, Shinya Yamada¹, Toshihide Okada², Hisashi Doyama¹ (1.Dept. of Gastroenterology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan, 2.Department of General Medicine, Ishikawa Prefectural Central Hospital, Ishikawa, Japan)

^○Yorihiko Mutou, Masaya Uesato, Yoshihide Senba, Hiroshi Suito, Ryoma Urahama, Yukiko Ogura, Akira Nakano, Mizuho Aikawa, Hideaki Miyauchi, Kazufumi Suzuki, Takanori Nishimori, Gaku Ohira, Takayuki Tohoma, Kazuo Narushima, Hisahiro Matsubara (Dept. of Frontier Surgery, Graduate School of Medicine, Chiba University, Japan)

^○Satohiro Matsumoto, Rumiko Kobayashi, Takehiro Ishii, Hiroyuki Tamura, Haruka Otake, Takeshi Uehara, Yuji Shindo, Harumi Kawamura, Yuzo Otaki, Shunsuke Urayoshi, Kenichi Yamanaka, Masatoshi Ikeda, Shinya Ushimaru, Takeharu Asano, Takaaki Iwaki, Masanori Fukunishi, Noriyoshi Sagihara, Shinichi Asabe, Hiroyuki Miyatani, Yukio Yoshida (Dept. of Gastroenterology, Jichi Med. Univ., Saitama Med. Ctr., Saitama, Japan)

^○Tomoaki Tashima¹, Ken Ohata¹, kazuteru Watanabe², Maiko Takita¹, Yasushi Matsuyama¹, Yohei Minato¹, Kouichi Nonaka¹, Yasushi Harihara², Nobuyuki Matsuhashi¹ (1.Kanto Medical Center NTT E.C,Dept. of Gastroenterology, Tokyo, Japan, 2.Kanto Medical Center NTT E.C, Surgery , Tokyo, Japan)

^○Hiroharu Kawakubo¹, Tmomi Yoshioka¹, Takashi Akutagawa¹, Ryuichi Iwakiri², Kohei Yamanouchi¹, Nanae Tsuruoka¹, Yasuhisa Sakata¹ (1.Dep.Of Gastorointesticnal Medicine,Sch.Of Med,Saga Univ,Saga,Japan, 2.Dep.of Optical medical surgery ,Sch.of Med,Saga Univ,Saga,Japan)