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Review
Minireviews
Basic Study
Frederik Temmerman, Feng Chen, Louis Libbrecht, Ingrid Vander Elst, Petra Windmolders, Yuanbo Feng, Yicheng Ni, Humbert De Smedt, Frederik Nevens, Jos van Pelt 
World J Gastroenterol 23(30):5499-5507. Published online Aug 14, 2017. doi: 10.3748/wjg.v23.i30.5499
Makoto Fujii, Atsushi Nishida, Hirotsugu Imaeda, Masashi Ohno, Kyohei Nishino, Shigeki Sakai, Osamu Inatomi, Shigeki Bamba, Masahiro Kawahara, Tomoharu Shimizu, Akira Andoh 
World J Gastroenterol 23(30):5519-5529. Published online Aug 14, 2017. doi: 10.3748/wjg.v23.i30.5519
Case Control Study
Retrospective Cohort Study
Retrospective Study
Christoph F Dietrich, Yi Dong, Christian Jenssen, Valentina Ciaravino, Michael Hocke, Wen-Ping Wang, Eike Burmester, Kathleen Moeller, Nathan SS Atkinson, Paola Capelli, Mirko D’Onofrio 
World J Gastroenterol 23(30):5567-5578. Published online Aug 14, 2017. doi: 10.3748/wjg.v23.i30.5567
Clinical Trials Study
Observational Study
Prospective Study
Systematic Reviews