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Open-Access Journal
Review
Vasiliy Ivanovich Reshetnyak, Alexandr Igorevich Burmistrov, Igor Veniaminovich Maev 
World J Gastroenterol 27(7):545-560. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.545
Basic Study
Qi-Cheng Chen, Zhi Jiang, Jun-Hong Zhang, Li-Xing Cao, Zhi-Qiang Chen 
World J Gastroenterol 27(7):576-591. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.576
Mushtaq Ahmad Ansari, Mohammad Raish, Yousef A Bin Jardan, Ajaz Ahmad, Mudassar Shahid, Sheikh Fayaz Ahmad, Nazrul Haq, Mohammad Rashid Khan, Saleh A Bakheet 
World J Gastroenterol 27(7):592-608. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.592
Clinical and Translational Research
Kento Imajo, Louise Tetlow, Andrea Dennis, Elizabeth Shumbayawonda, Sofia Mouchti, Timothy J Kendall, Eve Fryer, Shogi Yamanaka, Yasushi Honda, Takaomi Kessoku, Yuji Ogawa, Masato Yoneda, Satoru Saito, Catherine Kelly, Matt D Kelly, Atsushi Nakajima, Rajarshi Banerjee 
World J Gastroenterol 27(7):609-623. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.609
Retrospective Study
Yu-Chen Huang, Ning-Ning Yang, Hong-Chun Chen, Yuan-Li Huang, Wen-Tian Yan, Ru-Xue Yang, Nan Li, Shan Zhang, Pan-Pan Yang, Zhen-Zhong Feng 
World J Gastroenterol 27(7):624-640. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.624
Ling-Ling Huang, Xue-Ping Yu, Ju-Lan Li, Hui-Ming Lin, Na-Ling Kang, Jia-Ji Jiang, Yue-Yong Zhu, Yu-Rui Liu, Da-Wu Zeng 
World J Gastroenterol 27(7):641-653. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.641
Clinical Trials Study
Wen-Tao Jiang, Jian Yang, Yan Xie, Qing-Jun Guo, Da-Zhi Tian, Jun-Jie Li, Zhong-Yang Shen 
World J Gastroenterol 27(7):654-665. Published online Feb 21, 2021. doi: 10.3748/wjg.v27.i7.654
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