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Open-Access Journal
Opinion Review
Hai-Jian Zhang, Hong-Jun Xie, Shuo-Wen Huang, Xian Ye, Xiao-Hong Cui, Yan Wang, Xiao-Qing Cao, Yi-Fei Liu, Li-Wei Qiu 
World J Gastroenterol 26(18):2126-2137. Published online May 14, 2020. doi: 10.3748/wjg.v26.i18.2126
Review
Minireviews
Ilaria Lenci, Martina Milana, Giuseppe Grassi, Tommaso M Manzia, Carlo Gazia, Giuseppe Tisone, Roberta Angelico, Leonardo Baiocchi 
World J Gastroenterol 26(18):2166-2176. Published online May 14, 2020. doi: 10.3748/wjg.v26.i18.2166
Qing-Song Xia, Jing Gong, Li-Jun Xu, Hui Dong, Zhao-Yi Huang, Fan Wu, Fu-Er Lu 
World J Gastroenterol 26(18):2177-2186. Published online May 14, 2020. doi: 10.3748/wjg.v26.i18.2177
Basic Study
Nagi Elleisy, Sarah Rohde, Astrid Huth, Nicole Gittel, Änne Glass, Steffen Möller, Georg Lamprecht, Holger Schäffler, Robert Jaster 
World J Gastroenterol 26(18):2194-2202. Published online May 14, 2020. doi: 10.3748/wjg.v26.i18.2194
Retrospective Study
Meta-Analysis
Case Report
Yuki Adachi, Hiromitsu Hayashi, Toshihiko Yusa, Toru Takematsu, Kazuki Matsumura, Takaaki Higashi, Kensuke Yamamura, Takanobu Yamao, Katsunori Imai, Yo−ichi Yamashita, Hideo Baba 
World J Gastroenterol 26(18):2268-2275. Published online May 14, 2020. doi: 10.3748/wjg.v26.i18.2268
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