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Open-Access Journal
Review
Minireviews
Basic Study
Retrospective Cohort Study
Miroslav Vujasinovic, Aleksandra Hedström, Patrick Maisonneuve, Roberto Valente, Henrik von Horn, J-Matthias Löhr, Stephan L Haas 
World J Gastroenterol 25(5):600-607. Published online Feb 7, 2019. doi: 10.3748/wjg.v25.i5.600
Retrospective Study
Systematic Reviews
Els Van de Vijver, Ann Van Gils, Laura Beckers, Yannick Van Driessche, Nicolette Dorien Moes, Patrick Ferry van Rheenen 
World J Gastroenterol 25(5):632-643. Published online Feb 7, 2019. doi: 10.3748/wjg.v25.i5.632