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Open-Access Journal
Opinion Review
Review
Vasiliy I Reshetnyak, Igor V Maev, Alexandr I Burmistrov, Igor A Chekmazov, Tatiana I Karlovich 
World J Gastroenterol 26(15):1691-1707. Published online Apr 21, 2020. doi: 10.3748/wjg.v26.i15.1691
Minireviews
Silvia Nardelli, Oliviero Riggio, Stefania Gioia, Marta Puzzono, Giuseppe Pelle, Lorenzo Ridola 
World J Gastroenterol 26(15):1726-1732. Published online Apr 21, 2020. doi: 10.3748/wjg.v26.i15.1726
Basic Study
Case Control Study
Retrospective Study
Zhe-Xuan Wang, Jing Li, En-Xin Wang, Dong-Dong Xia, Wei Bai, Qiu-He Wang, Jie Yuan, Xiao-Mei Li, Jing Niu, Zhan-Xin Yin, Jie-Lai Xia, Dai-Ming Fan, Guo-Hong Han 
World J Gastroenterol 26(15):1805-1819. Published online Apr 21, 2020. doi: 10.3748/wjg.v26.i15.1805
Meta-Analysis
Case Report
Andrew Fagbemi, William G Newman, Stuart G Tangye, Stephen M Hughes, Edmund Cheesman, Peter D Arkwright 
World J Gastroenterol 26(15):1841-1846. Published online Apr 21, 2020. doi: 10.3748/wjg.v26.i15.1841
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