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Qing-Bin Meng, Jing-Jing Peng, Zi-Wei Qu, Xiao-Min Zhu, Zhang Wen, Wei-Ming Kang 
World J Gastrointest Oncol 11(6):449-458. Published online Jun 15, 2019. doi: 10.4251/wjgo.v11.i6.449
Basic Study
Retrospective Cohort Study
Retrospective Study