[1] Natl Hosp Org Kure Med Ctr, Dept Gastroenterol, Kure, Japan
[2] Chugoku Canc Ctr, Kure, Japan
[3] Hiroshima Univ Hosp, Gastrointestinal Endoscopy & Med, Hiroshima, Japan
[4] Natl Def Med Coll, Dept Surg, Tokorozawa, Saitama, Japan
[5] Hiroshima Univ Hosp, Dept Endoscopy, Hiroshima, Japan
[6] Japanese Fdn Canc Res, Canc Inst Hosp, Tokyo, Japan
[7] Japanese Fdn Canc Res, Canc Inst Hosp, Dept Colorectal Surg, Tokyo, Japan
[8] Japanese Fdn Canc Res, Canc Inst Hosp, Dept Pathol, Tokyo, Japan
[9] Shizuoka Canc Ctr, Div Endoscopy, Sunto, Japan
[10] Natl Canc Ctr Hosp East, Dept Gastroenterol & Endoscopy, Kashiwa, Japan
[11] Natl Canc Ctr, Exploratory Oncol Res & Clin Trial Ctr, Div Pathol, Kashiwa, Chiba, Japan
[12] Natl Canc Ctr, Div Endoscopy, Tokyo, Japan
[13] Natl Canc Ctr Hosp East, Dept Colorectal & Pelv Surg, Tokyo, Japan
[14] Natl Canc Ctr, Clin Lab Div, Tokyo, Japan
[15] Hiroshima City Asa Citizens Hosp, Dept Gastroenterol, Hiroshima, Japan
[16] Natl Def Med Coll, Lab Math, Tokorozawa, Saitama, Japan
[17] Takano Hosp, Coloproctol Ctr, Kumamoto, Japan
[18] Tochigi Canc Ctr, Dept Gastroenterol, Utsunomiya, Tochigi, Japan
[19] Univ Tokyo, Dept Surg Oncol, Tokyo, Japan
[20] Asahikawa City Hosp, Digest Dis Ctr, Asahikawa, Hokkaido, Japan
[21] Wakayama Med Univ, Sch Med, Dept Surg 2, Wakayama, Japan
[22] Fukushima Med Univ, Aizu Med Ctr, Dept Coloproctol, Aizu Wakamatsu, Fukushima, Japan
[23] Aichi Canc Ctr Hosp, Dept Gastroenterol Surg, Nagoya, Aichi, Japan
[24] Tokyo Med & Dent Univ, Med Innovat Promot Ctr, Tokyo, Japan
[25] Dokkyo Med Univ, Saitama Med Ctr, Dept Surg, Saitama, Japan
[26] Kurume Univ, Sch Med, Dept Pathol, Kurume, Japan
[27] Tohoku Univ, Grad Sch Med, Dept Surg, Sendai, Japan
[28] Juntendo Univ, Fac Med, Dept Coloproctol Surg, Tokyo, Japan
[29] Iwate Med Univ, Dept Mol Diagnost Pathol, Sch Med, Shiwa, Japan
[30] Tokyo Med Univ, Dept Gastrointestinal & Pediat Surg, Tokyo, Japan
[31] Akita Red Cross Hosp, Ctr Digest Dis, Akita, Japan
[32] Sapporo Med Univ, Dept Gastroenterol & Hepatol, Sch Med, Sapporo, Hokkaido, Japan
[33] Hyogo Coll Med, Dept Internal Med, Nishinomiya, Hyogo, Japan
[34] Natl Hosp Org, Tokyo Med Ctr, Dept Gastroenterol, Tokyo, Japan
[35] Nippon Med Sch, Grad Sch Med, Dept Gastroenterol, Tokyo, Japan
[36] Tokyo Metropolitan Hiroo Gen Hosp, Dept Surg, Tokyo, Japan
[37] Niigata Univ, Grad Sch Med & Dent Sci, Div Mol & Diagnost Pathol, Niigata, Japan
[38] Japan Acad, Tokyo, Japan