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Tomohide Hori, Kentaro Yamagiwa, Tadataka Hayashi, Shintaro Yagi, Taku Iida, Kentaro Taniguchi, Yoshifumi Kawarada, Shinji Uemoto 
World Journal of Gastrointestinal Surgery 5(11):309-313. Published online Nov 27, 2013. doi: 10.4240/wjgs.v5.i11.309