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Open-Access Journal
Editorial
Review
Basic Study
Agata Bartczak, Jianhua Zhang, Oyedele Adeyi, Achiya Amir, David Grant, Reginald Gorczynski, Nazia Selzner, Andrzej Chruscinski, Gary A Levy 
World J Gastroenterol 23(15):2673-2684. Published online Apr 21, 2017. doi: 10.3748/wjg.v23.i15.2673
Retrospective Cohort Study
Retrospective Study
Isabel Portillo, Eunate Arana-Arri, Isabel Idigoras, Isabel Bilbao, Lorea Martínez-Indart, Luis Bujanda, Iñaki Gutierrez-Ibarluzea 
World J Gastroenterol 23(15):2731-2742. Published online Apr 21, 2017. doi: 10.3748/wjg.v23.i15.2731
Clinical Trials Study
Observational Study
Charles Cock, Laura K Besanko, Carly M Burgstad, Alison Thompson, Stamatiki Kritas, Richard Heddle, Robert JL Fraser, Taher I Omari 
World J Gastroenterol 23(15):2785-2794. Published online Apr 21, 2017. doi: 10.3748/wjg.v23.i15.2785
Case Report