^○Kenro Kawada¹, Tatsuyuki Kawano¹, Yasuaki Nakajima¹, Toshihiro Matsui¹, Yutaka Nakajima¹, Yuichiro Kume¹, Masafumi Okuda¹, Taichi Ogo¹, Tairo Ryotokuji¹, naoto fujiwara¹, Yutaka Miyawaki¹, Yutaka Tokairin¹, Kagami Nagai¹, Takashi Ito² (1.Dept. of Esophageal Surgery, Tokyo Medical and Dental University, Tokyo, Japan, 2.Dept. of Human Pathology, Tokyo Medical and Dental Univ.)

^○Masafumi Wada^1,2, Yorinobu Sumida^1,2, Naohiko Harada^1,2, Seiichiro Sakisaka^1,2, Mio Kawamoto^1,2, Tomoyuki Kurashige^1,2, Fusako Kojima^1,2, Yoshitaka Hata^1,2, Hiroyuki Fujii^1,2, Nobito Higuchi^1,2, Yoichiro Iboshi^1,2, Nao Fujimori^1,2, Motoyuki Koujima^1,2, Tsuyoshi Yoshimoto^1,2, Ken Kawabe^1,2, Kunitaka Fukuizumi^1,2, Makoto Nakamuta^1,2, Kazuhiko Nakamura³ (1.Dept. of Gastroenterology, Kyushu Medical Center, Fukuoka, Japan, 2.Clinical Research Institute, Kyushu Medical Center, Fukuoka, Japan, 3.Department of Medicine and Bioregulatory Science, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan)

^○Tomohito Morisaki¹, Ryosuke Shiraishi², Takahiro Yukimoto¹, Hironori Sawase¹, Akiko Dogomori¹, Toshikazu Kohira¹, Toru Higuchi¹, Syoko Imamura¹, Keisuke Ario¹, Seiji Tunada¹, Mitsuru Taba³, Shinji Naito³, Kazuhiko Nakao⁴ (1.Dept. of Gastroenterology and Hepatology, National Hospital Organization Ureshino Medical Center, Ureshino, Saga, Japan., 2.Shiraishi Gastroenterology and Surgery Clinic, Tokitsu, Nagasaki, Japan., 3.Dept. of Pathology, National Hospital Organization Ureshino Medical Center, Ureshino, Saga, Japan., 4.Dept. of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.)

^○Hirohisa Takeuchi¹, Nobutsugu Abe¹, atsuko oki¹, Tadahiko Masaki¹, Toshiyuki Mori¹, Masanori Sugiyama¹, Yorihisa Imanishi², Naoyuki Kohno² (1.Dept. of Surgery, Sch. of Med. Kyorin Univ., Tokyo, Japan, 2.Dept. of f Otolaryngology, Sch. of Med. Kyorin Univ., Tokyo, Japan)