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Open-Access Journal
Editorial
Review
Roberto Peltrini, Mauro Podda, Simone Castiglioni, Maria Michela Di Nuzzo, Michele D'Ambra, Ruggero Lionetti, Maurizio Sodo, Gaetano Luglio, Felice Mucilli, Salomone Di Saverio, Umberto Bracale, Francesco Corcione 
World J Gastroenterol 27(38):6374-6386. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6374
Minireviews
Stephen Safe, Rupesh Shrestha, Kumaravel Mohankumar, Marcell Howard, Erik Hedrick, Maen Abdelrahim 
World J Gastroenterol 27(38):6387-6398. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6387
Basic Study
Retrospective Cohort Study
Retrospective Study
Ni Shi, Guo-Dong Sun, Yuan-Yuan Ji, Ying Wang, Yu-Cheng Zhu, Wan-Qiu Xie, Na-Na Li, Qiu-Yuan Han, Zhi-Dong Qi, Rui Huang, Ming Li, Zhen-Yu Yang, Jun-Bo Zheng, Xing Zhang, Qing-Qing Dai, Gui-Ying Hou, Yan-Song Liu, Hong-Liang Wang, Yang Gao 
World J Gastroenterol 27(38):6453-6464. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6453
Observational Study
Case Report
Correction
Letter to the Editor