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Open-Access Journal
Editorial
Review
Basic Study
Christian D Fingas, Andreas Paul, Ali Canbay, Guido Gerken, Joachim C Mertens, Sandra Swoboda, Lena Wingerter, Sami Jafoui, Svenja Sydor 
World J Gastroenterol 23(22):4007-4015. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4007
Case Control Study
Malgorzata Matusiewicz, Katarzyna Neubauer, Iwona Bednarz-Misa, Sabina Gorska, Malgorzata Krzystek-Korpacka 
World J Gastroenterol 23(22):4039-4046. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4039
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
Jian-Hong Chen, Zheng Zeng, Xia-Xia Zhang, Yu Zhang, Ren-Wen Zhang, Shuai Wang, Chi-Hong Wu, Min Yu, Dan Liu, Hong-Li Xi, Yi-Xing Zhou, Yao-Yu An, Xiao-Yuan Xu 
World J Gastroenterol 23(22):4072-4079. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4072
Qiao-Huan Yan, Dian-Guo Xu, Yan-Feng Shen, Ding-Ling Yuan, Jun-Hui Bao, Hai-Bin Li, Ying-Gang Lv 
World J Gastroenterol 23(22):4080-4089. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4080
Prospective Study
Jan Schwarz, Josef Sýkora, Dominika Cvalínová, Renáta Pomahačová, Jana Klečková, Martin Kryl, Petr Včelák 
World J Gastroenterol 23(22):4090-4101. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4090
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
Letter to the Editor
Lucia Ameghino, Malco Damian Rossi, Daniel Cerquetti, Marcelo Merello 
World J Gastroenterol 23(22):4132-4134. Published online Jun 14, 2017. doi: 10.3748/wjg.v23.i22.4132
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