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Open-Access Journal
Opinion Review
Review
Simcha Weissman, Muhammad Aziz, Ryan B Perumpail, Tej I Mehta, Rutwik Patel, James H Tabibian 
World J Gastroenterol 26(22):2902-2915. Published online Jun 14, 2020. doi: 10.3748/wjg.v26.i22.2902
Irina V Arutyunyan, Timur Kh Fatkhudinov, Andrey V Makarov, Andrey V Elchaninov, Gennady T Sukhikh 
World J Gastroenterol 26(22):2948-2966. Published online Jun 14, 2020. doi: 10.3748/wjg.v26.i22.2948
Minireviews
Basic Study
Laura Necula, Lilia Matei, Denisa Dragu, Ioana Pitica, Ana Iulia Neagu, Coralia Bleotu, Simona Dima, Irinel Popescu, Carmen C Diaconu, Mihaela Chivu-Economescu 
World J Gastroenterol 26(22):3024-3033. Published online Jun 14, 2020. doi: 10.3748/wjg.v26.i22.3024
Case Control Study
Retrospective Study
Observational Study
Ai-Juan Xue, Shi-Jian Miao, Hua Sun, Xiao-Xia Qiu, Sheng-Nan Wang, Lin Wang, Zi-Qing Ye, Cui-Fang Zheng, Zhi-Heng Huang, Yu-Huan Wang, Ying Huang 
World J Gastroenterol 26(22):3098-3109. Published online Jun 14, 2020. doi: 10.3748/wjg.v26.i22.3098
Case Report
Francesco Panzera, Riccardo Inchingolo, Marina Rizzi, Assunta Biscaglia, Maria Grazia Schievenin, Emilia Tallarico, Giancarlo Pacifico, Beatrice Di Venere 
World J Gastroenterol 26(22):3110-3117. Published online Jun 14, 2020. doi: 10.3748/wjg.v26.i22.3110