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Opinion Review
Review
Basic Study
Min Sun, Chan-Juan Yu, Jia-Yun Li, Si-Hai Wang, Di Yang, Cheng-Lin Guo, Xue Du, Wen-Jin Zhang, Ruo-Dong Cheng, Xiao-Chuan Diao, Zhao-Hui Fang, Yan Li, Jin-Dong Zhao 
World J Gastroenterol 27(8):708-724. Published online Feb 28, 2021. doi: 10.3748/wjg.v27.i8.708
Prospective Study
Jin-Tao Guo, Jing-Jing Zhang, Yu-Fan Wu, Ye Liao, Yi-Dan Wang, Bao-Zhen Zhang, Sheng Wang, Si-Yu Sun 
World J Gastroenterol 27(8):725-736. Published online Feb 28, 2021. doi: 10.3748/wjg.v27.i8.725
Meta-Analysis
Kai-Yuan Jiang, Heng Huang, Wei-Yang Chen, Hao-Ji Yan, Zhen-Ting Wei, Xiao-Wen Wang, Hao-Xuan Li, Xiang-Yun Zheng, Dong Tian 
World J Gastroenterol 27(8):737-750. Published online Feb 28, 2021. doi: 10.3748/wjg.v27.i8.737
Case Report
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