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Open-Access Journal
Editorial
Review
Antonietta Gerarda Gravina, Rocco Maurizio Zagari, Cristiana De Musis, Lorenzo Romano, Carmelina Loguercio, Marco Romano 
World J Gastroenterol 24(29):3204-3221. Published online Aug 7, 2018. doi: 10.3748/wjg.v24.i29.3204
Minireviews
Basic Study
Retrospective Study
Observational Study
Svein Oskar Frigstad, Marte Lie Høivik, Jørgen Jahnsen, Milada Cvancarova, Tore Grimstad, Ingrid Prytz Berset, Gert Huppertz-Hauss, Øistein Hovde, Tomm Bernklev, Bjørn Moum, Lars-Petter Jelsness-Jørgensen 
World J Gastroenterol 24(29):3293-3301. Published online Aug 7, 2018. doi: 10.3748/wjg.v24.i29.3293
Meta-Analysis