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Open-Access Journal
Editorial
Review
Basic Study
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
Systematic Reviews
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