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Open-Access Journal
Review
Thomas Lambin, Cyril Lafon, Robert Andrew Drainville, Mathieu Pioche, Frédéric Prat 
World J Gastroenterol 28(13):1288-1303. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1288
Minireviews
José Luis Muñoz de Nova, Jorge Hernando, Miguel Sampedro Núñez, Greissy Tibisay Vázquez Benítez, Eva María Triviño Ibáñez, María Isabel del Olmo García, Jorge Barriuso, Jaume Capdevila, Elena Martín-Pérez 
World J Gastroenterol 28(13):1304-1314. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1304
Basic Study
Jin-Hua Liu, Dan-Yang Liu, Yong-Feng Yuan, Xue-Jun Sun, Shu-Mei Shan 
World J Gastroenterol 28(13):1329-1337. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1329
Grant Halliday, Ross J Porter, Catherine J Black, Mark J Arends, Shahida Din 
World J Gastroenterol 28(13):1338-1346. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1338
Retrospective Study
Dong-Yun Zhang, Jian-Wei Ku, Xue-Ke Zhao, Hai-Yan Zhang, Xin Song, Hong-Fang Wu, Zong-Min Fan, Rui-Hua Xu, Duo You, Ran Wang, Ruo-Xi Zhou, Li-Dong Wang 
World J Gastroenterol 28(13):1347-1361. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1347
Meta-Analysis
Veerle Huizer, Naveen Wijekoon, Daniëlle Roorda, Jaap Oosterlaan, Marc A Benninga, LW Ernest van Heurn, Shaman Rajindrajith, Joep PM Derikx 
World J Gastroenterol 28(13):1362-1376. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1362
Letter to the Editor
Alba Panarese 
World J Gastroenterol 28(13):1377-1379. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1377
Brindusa Truta 
World J Gastroenterol 28(13):1380-1383. Published online Apr 7, 2022. doi: 10.3748/wjg.v28.i13.1380
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