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Open-Access Journal
Editorial
Elena Genova, Gabriele Stocco, Giuliana Decorti 
World J Gastroenterol 27(35):5796-5802. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5796
Opinion Review
Christoph G Dietrich, Monika Rau, Andreas Geier 
World J Gastroenterol 27(35):5803-5821. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5803
Review
Palas Samanta, Apurba Ratan Ghosh 
World J Gastroenterol 27(35):5822-5850. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5822
Valeria Tonini, Manuel Zanni 
World J Gastroenterol 27(35):5851-5889. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5851
Roberta Elisa Rossi, Alessandra Elvevi, Davide Citterio, Jorgelina Coppa, Pietro Invernizzi, Vincenzo Mazzaferro, Sara Massironi 
World J Gastroenterol 27(35):5890-5907. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5890
Minireviews
Rawen Kader, Andreas V Hadjinicolaou, Fanourios Georgiades, Danail Stoyanov, Laurence B Lovat 
World J Gastroenterol 27(35):5908-5918. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5908
Sara Cococcia, Marco Vincenzo Lenti, Giovanni Santacroce, Giovanna Achilli, Federica Borrelli de Andreis, Antonio Di Sabatino 
World J Gastroenterol 27(35):5919-5931. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5919
Michael D Diamantidis, Maria Papaioannou, Evdoxia Hatjiharissi 
World J Gastroenterol 27(35):5932-5945. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5932
Basic Study
Xue-Liang Sun, Li-Chao Qiao, Jing Gong, Ke Wen, Zhi-Zhong Xu, Bo-Lin Yang 
World J Gastroenterol 27(35):5946-5957. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5946
Retrospective Study
Zhen-Zhen Wang, Xian-Bin Zhou, Yi Wang, Xin-Li Mao, Li-Ping Ye, Ling-Ling Yan, Ya-Hong Chen, Ya-Qi Song, Yue Cai, Shi-Wen Xu, Shao-Wei Li 
World J Gastroenterol 27(35):5958-5966. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5958
Shan Zhang, Pan-Pan Yang, Yu-Chen Huang, Hong-Chun Chen, De-Li Chen, Wen-Tian Yan, Ning-Ning Yang, Yuan Li, Nan Li, Zhen-Zhong Feng 
World J Gastroenterol 27(35):5967-5977. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5967
Róbert Stollmayer, Bettina K Budai, Ambrus Tóth, Ildikó Kalina, Erika Hartmann, Péter Szoldán, Viktor Bérczi, Pál Maurovich-Horvat, Pál N Kaposi 
World J Gastroenterol 27(35):5978-5988. Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5978
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