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Open-Access Journal
Editorial
Review
Basic Study
Svenja Sydor, Sami Jafoui, Lena Wingerter, Sandra Swoboda, Joachim C Mertens, Guido Gerken, Ali Canbay, Andreas Paul, Christian D Fingas 
World J Gastroenterol 23(22):4007-4015. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4007
Case Control Study
Retrospective Study
Observational Study
Anna Hüsing-Kabar, Hauke Sebastian Heinzow, Hartmut Hans-Jürgen Schmidt, Carina Stenger, Hans Ulrich Gerth, Michele Pohlen, Gerold Thölking, Christian Wilms, Iyad Kabar 
World J Gastroenterol 23(22):4064-4071. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4064
Prospective Study
Tomas Koller, Martina Galambosova, Simona Filakovska, Michaela Kubincova, Tibor Hlavaty, Jozef Toth, Anna Krajcovicova, Juraj Payer 
World J Gastroenterol 23(22):4102-4111. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4102
Systematic Reviews
Sofie Ingdam Halkjær, Anders Watt Boolsen, Stig Günther, Alice Højer Christensen, Andreas Munk Petersen 
World J Gastroenterol 23(22):4112-4120. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4112
Case Report
Masaki Murata, Shigeki Bamba, Kenichiro Takahashi, Hirotsugu Imaeda, Atsushi Nishida, Osamu Inatomi, Tomoyuki Tsujikawa, Ryoji Kushima, Mitsushige Sugimoto, Akira Andoh 
World J Gastroenterol 23(22):4121-4126. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4121
Letters To The Editor