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Open-Access Journal
Case Control Study
Ruben Ciria, Ana Padial, María Dolores Ayllón, Carmen García-Gaitan, Javier Briceño 
World J Gastrointest Surg 14(3):211-220. Published online Mar 27, 2022. doi: 10.4240/wjgs.v14.i3.211
Retrospective Study
Xu Ji, Zhuo Yang, Shu-Ren Ma, Wen Jia, Qian Zhao, Lu Xu, Ying Kan, Yang Cao, Yao Wang, Bao-Jun Fan 
World J Gastrointest Surg 14(3):236-246. Published online Mar 27, 2022. doi: 10.4240/wjgs.v14.i3.236
Meta-Analysis
Chun-Yan Weng, Cheng-Hai He, Ming-Yang Zhuang, Jing-Li Xu, Bin Lyu 
World J Gastrointest Surg 14(3):247-259. Published online Mar 27, 2022. doi: 10.4240/wjgs.v14.i3.247
Case Report
Yutaka Endo, Motohide Shimazu, Tadayuki Sakuragawa, Yusuke Uchi, Motonori Edanami, Ken Sunamura, Soji Ozawa, Naokazu Chiba, Shigeyuki Kawachi 
World J Gastrointest Surg 14(3):260-267. Published online Mar 27, 2022. doi: 10.4240/wjgs.v14.i3.260
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