^○Yu Saito¹, Satoru Imura¹, Hiroki Teraoku¹, Shuichi Iwahashi¹, Tetsuya Ikemoto¹, Yuji Morine¹, Maki Sugimoto², Mitsuo Shimada¹ (1.Department of Surgery, 2.International University of Health and Welfare)

^○Yusuke Fujii, Akira Mori, Akio Nakajima, Akira Arimoto (Department of Surgery,Osaka red cross Hospital,Osaka,Japan)

^○Yuki Nagata, Jun Kadono, Kenri Akamine, Masahiko Osako, Teruhiko Watanabe, Naoki Ishizaki (Department of Surgery, Kagoshima Medical Association Hospital)

^○Hieu Le Trung, Trieu Trieu Duong, Le Van Thanh, Vu Van Quang (Department of Hepatobiliary and Pancreatic Surgery, 108 Military Central Hospital)

^○Tomokazu Tanaka, Takao Ide, Hirokazu Noshiro (Department of Surgery, Saga University, Saga, Japan)

^○Genki Watanabe, Hiromichi Ito, Yoshihiro Mise, Yosuke Inoue, Takeaki Ishizawa, Yu Takahashi, Akio Saiura (Cancer Institute Hospital)