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Open-Access Journal
Opinion Review
Review
George E Fragoulis, Christina Liava, Dimitrios Daoussis, Euangelos Akriviadis, Alexandros Garyfallos, Theodoros Dimitroulas 
World J Gastroenterol 25(18):2162-2176. Published online May 14, 2019. doi: 10.3748/wjg.v25.i18.2162
Minireviews
Basic Study
Retrospective Study
Luca Morelli, Simone Guadagni, Valerio Borrelli, Roberta Pisano, Gregorio Di Franco, Matteo Palmeri, Niccolò Furbetta, Dario Gambaccini, Santino Marchi, Piero Boraschi, Luca Bastiani, Alessandro Campatelli, Franco Mosca, Giulio Di Candio 
World J Gastroenterol 25(18):2217-2228. Published online May 14, 2019. doi: 10.3748/wjg.v25.i18.2217
Clinical Trials Study
Nicole Loo, Eric Lawitz, Naim Alkhouri, Jennifer Wells, Carmen Landaverde, Angie Coste, Rossalynn Salcido, Michael Scott, Fred Poordad 
World J Gastroenterol 25(18):2229-2239. Published online May 14, 2019. doi: 10.3748/wjg.v25.i18.2229
Observational Study
Meta-Analysis
Case Report