^○Tamotsu Sugai¹, Hiroo Yamano², Eiichiro Yamamoto³ (1.Dept. of Molecular Diagnostic Pathology, Sch. of Med, Iwate Med. Univ., Irate, Japan, 2.Akita Red Cross Hospital, Akita, Japan, 3.Sapporo Med., Univ., Sapporo, Japan)

^○Wataru Sano¹, Yasushi Sano¹, Takahiro Fujimori² (1.Gastrointestinal Center, Sano Hospital, Hyogo, Japan, 2.Department of Pathology, Shinko Hospital, Hyogo, Japan)

^○Shinya Ishigooka, Shunichiro Ozawa, FUMIO Ito (Div. of Gastroenterology and Hepatology, Dept. of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan)

^○Shuichiro Nagata^1,2, Osamu Tsuruta^1,2, Takuji Torimura^1,2 (1.Div. of Gastroenterology, Dept. of Medicine, Kurume University School of Medicine, Kurume, Japan, 2.Division of GI endoscopy, Kurume University School of Medicine, Kurume, Japan)

^○Hidenori Tanaka¹, Shinji Nagata², Mayumi Kaneko³ (1.Dept. of Gastroenterology, Hiroshima City Asa Hospital, Hiroshima, Japan, 2.Dept. of Endoscopy, Hiroshima City Asa Hospital, Hiroshima, Japan, 3.Dept. of Pathology, Hiroshima City Asa Hospital, Hiroshima, Japan)

^○Yutaka Nakao^1,2, Shoichi Saito³, Masahiro Ikegami⁴ (1.Nishisaitama-Chuo National Hospital, Saitama, Japan, 2.Department of Internal Medicine, Division of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan, 3.Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan, 4.Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan)

^○Yushi Ogawa, Shinei Kudo, Makoto Kutsukawa (Digestive Disease Center, Showa Univercity Northern Yokohama Hospital, Yokohama, Japan)

^○Hirotsugu Saiki, Masashi Yamamoto, Tsutomu Nishida (Dept. of Gastroenterology, Toyonaka Municipal Hospital, Japan)

^○Akihiro Ito, Seiichi Daikuhara, Tomoaki Suga (Shinshu Univrsity, Nnagano, Japan)

^○Shigehiko Fujii, Toshihiro Kusaka, Hiroyuki Kokuryu (Digestive Disease Center, Dept. of Gastroenterology, Kyoto Katsura Hospital, Japan)

^○Kaizo Kagemoto, Toshi Takaoka, Tetsuji Takayama (Tokushima University Hospital, Japan)

^○Yoshihito Tanaka, Hiroo Yamano, Hiro-o Matsushita (Dept. of Gastroenterology,Akita Red Cross Hospital,Akita,Japan)