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Ryo Kanazawa, Jin Kan Sai, Tomoyasu Ito, Hiroko Miura, Shigeto Ishii, Hiroaki Saito, Ko Tomishima, Ryo Shimizu, Koki Sato, Manabu Hayashi, Sumio Watanabe, Shuichiro Shiina 
World J Gastrointest Endosc 8(18):663-668. Published online Oct 16, 2016. doi: 10.4253/wjge.v8.i18.663
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