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Kazunao Hayashi, Kenya Kamimura, Kazunori Hosaka, Satoshi Ikarashi, Junji Kohisa, Kazuya Takahashi, Kentaro Tominaga, Kenichi Mizuno, Satoru Hashimoto, Junji Yokoyama, Satoshi Yamagiwa, Kazuyasu Takizawa, Toshifumi Wakai, Hajime Umezu, Shuji Terai 
World J Gastrointest Endosc 9(12):583-589. Published online Dec 16, 2017. doi: 10.4253/wjge.v9.i12.583