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Kiyotaka Okuno
Department of Surgery Kinki University Faculty of Medicine
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Toru Aoyama
Department of Surgery, Yokohama City University
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Koji Oba
Department of Biostatistics, The University of Tokyo
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Noboru Yokoyama
Digestive Disease Center, Showa University Koto Toyosu Hospital
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Kazuhiro Yoshida
Department of Surgery & Oncology, Gifu University Hospital
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Katsuyuki Kunieda
Department of Surgery, Gifu Prefectural General Medical Center
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Eiji Nishimura
Department of Digestive Surgery, Saitama Cancer Center
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Hiroki Akamatsu
Department of Surgery, Osaka Police Hospital
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Takaya Obatake
Department of Digestive Surgery, Shikoku Cancer Center
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Satoshi Morita
Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine
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Takaki Yoshikawa
Department of Gastrointestinal Surgery, Kanagawa Cancer Center
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Shigetoyo Saji
Japanese Foundation for Multidisciplinary Treatment of Cancer