[1] Oita Univ, Fac Med, Dept Gastroenterol & Pediat Surg, Oita, Japan
[2] Keio Univ, Dept Surg, Sch Med, Tokyo, Japan
[3] Oita Univ, Dept Clin Stat & Data Management, Fac Med, Oita, Japan
[4] Tokyo Metropolitan Komagome Hosp, Dept Surg, Tokyo, Japan
[5] Int Univ Hlth & Welf, Chemotherapy Res Inst, Dept Hemodialysis & Surg, Chiba, Japan
[6] Teikyo Univ, Dept Surg, Sch Med, Tokyo, Japan
[7] Seoul Natl Univ, Dept Surg, Bundang Hosp, Seongnam Si, South Korea
[8] Lin Kou Chang Gung Mem Hosp, Div Gen Surg, Tayuan, Taiwan
[9] Fukuoka Kieikai Hosp, Dept Surg, Fukuoka, Japan
[10] Fujinomiya City Gen Hosp, Dept Surg, Shizuoka, Japan
[11] Minimally Invas Surg Ctr, Yotsuya Med Cube, Tokyo, Japan
[12] Konyang Univ Hosp, Dept Surg, Daejeon, South Korea
[13] Show Chwan Mem Hosp, Dept Surg, Changhua, Taiwan
[14] Far Eastern Mem Hosp, Dept Surg, New Taipei, Tauyuan, Taiwan
[15] Far Eastern Mem Hosp, Dept Elect Engn, New Taipei, Tauyuan, Taiwan
[16] Yuan Ze Univ, New Taipei, Tauyuan, Taiwan
[17] Toho Univ, Dept Surg, Ohashi Med Ctr, Tokyo, Japan
[18] Jikei Univ, Dept Surg, Kashiwa Hosp, Chiba, Japan
[19] Tokyo Med Univ, Dept Gastrointestinal & Pediat Surg, Tokyo, Japan
[20] Yonsei Univ, Dept Surg, Gangnam Severance Hosp, Seoul, South Korea
[21] Seoul Natl Univ Hosp, Dept Surg, Seoul, South Korea
[22] Chonbuk Natl Univ Hosp, Dept Surg, Jeonju, South Korea
[23] Keimyung Univ, Dept Surg, Dongsan Med Ctr, Daegu, South Korea
[24] Univ Ulsan, Dept Surg, Coll Med, Seoul, South Korea
[25] Asan Med Ctr, Seoul, South Korea
[26] Chungnam Natl Univ Hosp, Dept Surg, Daejeon, South Korea
[27] Eulji Univ Hosp, Dept Surg, Daejeon, South Korea
[28] Yeungnam Univ, Dept Surg, Daegu, South Korea
[29] Sungkyunkwan Univ, Dept Surg, Seoul, South Korea
[30] Natl Cheng Kung Univ Hosp, Dept Surg, Tainan, Taiwan
[31] Yuans Gen Hosp, Dept Surg, Kaohsiung, Taiwan
[32] Triserv Gen Hosp, Div Gen Surg, Natl Def Med Ctr, Taipei, Taiwan
[33] Taichung Vet Gen Hosp, Dept Surg, Taichung, Taiwan
[34] Kaohsiung Med Univ Hosp, Dept Surg, Kaohsiung, Taiwan
[35] Musashino Tokushukai Hosp, Dept Surg, Tokyo, Japan
[36] Tokyo Womens Med Univ, Inst Gastroenterol, Dept Surg, Tokyo, Japan
[37] Nippon Med Sch, Dept Gastrointestinal & Hepatobiliarypancreat Sur, Tokyo, Japan
[38] Nippon Med Sch, Dept Surg, Tokyo, Japan
[39] Kansai Rosai Hosp, Dept Surg, Amagasaki, Hyogo, Japan
[40] Fujita Hlth Univ, Dept Gen & Pancreat Surg, Qual & Safety Healthcare, Toyoake, Aichi, Japan
[41] Nagoya Daini Red Cross Hosp, Dept Surg, Nagoya, Aichi, Japan
[42] Kameda Med Ctr, Dept Surg, Chiba, Japan
[43] Tohoku Rosai Hosp, Dept Surg, Sendai, Miyagi, Japan
[44] Toranomon Gen Hosp, Dept Digest Surg, Tokyo, Japan
[45] St Lukes Int Hosp, Dept Surg Gastroenterol, Tokyo, Japan
[46] Jikei Univ, Dept Surg, Sch Med, Tokyo, Japan
[47] Tokai Hosp, Laparoscop Surg Ctr, Nagoya, Aichi, Japan
[48] Jichi Med Univ, Saitama Med Ctr, Dept Surg, Saitama, Japan
[49] Jichi Med Univ, Dept Surg, Shimotsuke, Tochigi, Japan
[50] Chiba Tokushukai Hosp, Director, Chiba, Japan