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Yoko Kubosawa, Hideki Mori, Satoshi Kinoshita, Yoshihiro Nakazato, Ai Fujimoto, Masahiro Kikuchi, Toshihiro Nishizawa, Masayuki Suzuki, Hidekazu Suzuki 
World J Gastroenterol 25(42):6342-6353. Published online Nov 14, 2019. doi: 10.3748/wjg.v25.i42.6342
Observational Study