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Open-Access Journal
Editorial
Giulia Zudeh, Raffaella Franca, Gabriele Stocco, Giuliana Decorti 
World J Gastroenterol 27(38):6348-6356. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6348
Review
Robert Lam, Thiruvengadam Muniraj 
World J Gastroenterol 27(38):6357-6373. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6357
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
Michelle Viscaino, Javier Torres Bustos, Pablo Muñoz, Cecilia Auat Cheein, Fernando Auat Cheein 
World J Gastroenterol 27(38):6399-6414. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6399
Noel Pin-Vieito, Manuel Puga, Daniel Fernández-de-Castro, Joaquín Cubiella 
World J Gastroenterol 27(38):6415-6429. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6415
Basic Study
Giulia Nannini, Gaia Meoni, Leonardo Tenori, Maria Novella Ringressi, Antonio Taddei, Elena Niccolai, Simone Baldi, Edda Russo, Claudio Luchinat, Amedeo Amedei 
World J Gastroenterol 27(38):6430-6441. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6430
Retrospective Cohort Study
Masanori Ochi, Ryosuke Kawagoe, Toshiro Kamoshida, Yukako Hamano, Haruka Ohkawara, Atsushi Ohkawara, Nobushige Kakinoki, Yuji Yamaguchi, Shinji Hirai, Akinori Yanaka, Kiichiro Tsuchiya 
World J Gastroenterol 27(38):6442-6452. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6442
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
Yan Zhang, Bo Cheng, Zhong-Wei Wu, Zong-Chao Cui, Yao-Dong Song, San-Yang Chen, Yan-Na Liu, Chang-Ju Zhu 
World J Gastroenterol 27(38):6489-6500. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6489
Case Report
Sotaro Ozaka, Kunimitsu Inoue, Tomoya Okajima, Takako Tasaki, Shimpei Ariki, Hideki Ono, Takeaki Ando, Tsutomu Daa, Kazunari Murakami 
World J Gastroenterol 27(38):6501-6510. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6501
Correction
Letter to the Editor
Rogério Serafim Parra, Omar Feres, José Joaquim Ribeiro Rocha 
World J Gastroenterol 27(38):6513-6514. Published online Oct 14, 2021. doi: 10.3748/wjg.v27.i38.6513
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