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Haruo Ikeda, Hiroaki Ito, Muneaki Hikita, Noriko Yamaguchi, Naoyuki Uragami, Noboru Yokoyama, Yuko Hirota, Miki Kushima, Yoichi Ajioka, Haruhiro Inoue 
World J Gastrointest Oncol 10(11):439-448. Published online Nov 15, 2018. doi: 10.4251/wjgo.v10.i11.439
Meta-Analysis