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Open-Access Journal
Opinion Review
Review
Giovanni Marasco, Antonio Colecchia, Giovanni Silva, Benedetta Rossini, Leonardo Henry Eusebi, Federico Ravaioli, Elton Dajti, Luigina Vanessa Alemanni, Luigi Colecchia, Matteo Renzulli, Rita Golfieri, Davide Festi 
World J Gastroenterol 26(24):3326-3343. Published online Jun 28, 2020. doi: 10.3748/wjg.v26.i24.3326
Vanessa A Areco, Romina Kohan, Germán Talamoni, Nori G Tolosa de Talamoni, María E Peralta López 
World J Gastroenterol 26(24):3344-3364. Published online Jun 28, 2020. doi: 10.3748/wjg.v26.i24.3344
Aida Kamalian, Masoud Sohrabi Asl, Mahsa Dolatshahi, Khashayar Afshari, Shiva Shamshiri, Nazanin Momeni Roudsari, Saeideh Momtaz, Roja Rahimi, Mohammad Abdollahi, Amir Hossein Abdolghaffari 
World J Gastroenterol 26(24):3365-3400. Published online Jun 28, 2020. doi: 10.3748/wjg.v26.i24.3365
Minireviews
Zhen-Guo Liu, Xin-Hua Chen, Zu-Jiang Yu, Jun Lv, Zhi-Gang Ren 
World J Gastroenterol 26(24):3421-3431. Published online Jun 28, 2020. doi: 10.3748/wjg.v26.i24.3421
Basic Study
Retrospective Cohort Study
Stuart L Polk, Jung W Choi, Melissa J McGettigan, Trevor Rose, Abraham Ahmed, Jongphil Kim, Kun Jiang, Yoganand Balagurunathan, Jin Qi, Paola T Farah, Alisha Rathi, Jennifer B Permuth, Daniel Jeong 
World J Gastroenterol 26(24):3458-3471. Published online Jun 28, 2020. doi: 10.3748/wjg.v26.i24.3458
Retrospective Study
Observational Study
Systematic Reviews