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Open-Access Journal
Frontier
Abraham Edgar Gracia-Ramos, Joel Omar Jaquez-Quintana, Raúl Contreras-Omaña, Moises Auron 
World J Gastroenterol 27(26):3951-3970. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.3951
Opinion Review
Review
Kapil Gupta, Abhishek Bhurwal, Cindy Law, Scott Ventre, Carlos D Minacapelli, Savan Kabaria, You Li, Christopher Tait, Carolyn Catalano, Vinod K Rustgi 
World J Gastroenterol 27(26):3984-4003. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.3984
Fátima Higuera-de la Tijera, Alfredo Servín-Caamaño, Luis Servín-Abad 
World J Gastroenterol 27(26):4004-4017. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4004
María B Pisano, Cecilia G Giadans, Diego M Flichman, Viviana E Ré, María V Preciado, Pamela Valva 
World J Gastroenterol 27(26):4018-4044. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4018
Robert S O'Neill, Alina Stoita 
World J Gastroenterol 27(26):4045-4087. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4045
Simon Bourcier, Julian Klug, Lee S Nguyen 
World J Gastroenterol 27(26):4088-4103. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4088
Minireviews
Piero Boraschi, Luigi Giugliano, Giuseppe Mercogliano, Francescamaria Donati, Stefania Romano, Emanuele Neri 
World J Gastroenterol 27(26):4143-4159. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4143
Paulina Delgado-Gonzalez, Carlos A Gonzalez-Villarreal, Jorge A Roacho-Perez, Adriana G Quiroz-Reyes, Jose Francisco Islas, Juan Luis Delgado-Gallegos, Daniel Arellanos-Soto, Kame A Galan-Huerta, Elsa N Garza-Treviño 
World J Gastroenterol 27(26):4160-4171. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4160
Ayo O Omiyale 
World J Gastroenterol 27(26):4172-4181. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4172
Piero Veronese, Icilio Dodi, Susanna Esposito, Giuseppe Indolfi 
World J Gastroenterol 27(26):4182-4193. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4182
Basic Study
Xiu-Yan Li, Qing-Xia Guan, Yu-Zhou Shang, Yan-Hong Wang, Shao-Wa Lv, Zhi-Xin Yang, Rui Wang, Yu-Fei Feng, Wei-Nan Li, Yong-Ji Li 
World J Gastroenterol 27(26):4208-4220. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4208
Min Zhong, Ling Zhou, Zhi Fang, Yang-Yang Yao, Jian-Ping Zou, Jian-Ping Xiong, Xiao-Jun Xiang, Jun Deng 
World J Gastroenterol 27(26):4221-4235. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4221
Retrospective Study
Hao Liu, Peng Jin, Xu Quan, Yi-Bin Xie, Fu-Hai Ma, Shuai Ma, Yang Li, Wen-Zhe Kang, Yan-Tao Tian 
World J Gastroenterol 27(26):4236-4245. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4236
Correction
Letter to the Editor
Yu-Pei Zhuang, Hao-Jie Zhong 
World J Gastroenterol 27(26):4248-4251. Published online Jul 14, 2021. doi: 10.3748/wjg.v27.i26.4248
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