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Open-Access Journal
Review
Minireviews
Maria Luísa Cordeiro Santos, Breno Bittencourt de Brito, Filipe Antônio França da Silva, Mariana Miranda Sampaio, Hanna Santos Marques, Natália Oliveira e Silva, Dulciene Maria de Magalhães Queiroz, Fabrício Freire de Melo 
World J Gastroenterol 26(28):4076-4093. Published online Jul 28, 2020. doi: 10.3748/wjg.v26.i28.4076
Basic Study
Case Control Study
Iker Alegria-Lertxundi, Carmelo Aguirre, Luis Bujanda, Francisco J Fernández, Francisco Polo, José Mª Ordovás, Mª Carmen Etxezarraga, Iñaki Zabalza, Mikel Larzabal, Isabel Portillo, Marian M de Pancorbo, Koldo Garcia-Etxebarria, Ana Mª Rocandio, Marta Arroyo-Izaga 
World J Gastroenterol 26(28):4108-4125. Published online Jul 28, 2020. doi: 10.3748/wjg.v26.i28.4108
Retrospective Study
Karolina Lomperta, Katarzyna Jakubowska, Malgorzata Grudzinska, Luiza Kanczuga-Koda, Andrzej Wincewicz, Eva Surmacz, Stanislaw Sulkowski, Mariusz Koda 
World J Gastroenterol 26(28):4140-4150. Published online Jul 28, 2020. doi: 10.3748/wjg.v26.i28.4140
Observational Study
Settachote Maholarnkij, Anapat Sanpavat, Katawaetee Decharun, Termpong Dumrisilp, Chomchanat Tubjareon, Benjawan Kanghom, Tanisa Patcharatrakul, Nataruks Chaijitraruch, Voranush Chongsrisawat, Palittiya Sintusek 
World J Gastroenterol 26(28):4159-4169. Published online Jul 28, 2020. doi: 10.3748/wjg.v26.i28.4159
Randomized Controlled Trial