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Basic Study
Case Control Study
Kenichi Inaoka, Mitsuro Kanda, Hiroaki Uda, Yuri Tanaka, Chie Tanaka, Daisuke Kobayashi, Hideki Takami, Naoki Iwata, Masamichi Hayashi, Yukiko Niwa, Suguru Yamada, Tsutomu Fujii, Hiroyuki Sugimoto, Kenta Murotani, Michitaka Fujiwara, Yasuhiro Kodera 
World J Gastroenterol 23(14):2519-2526. Published online Apr 14, 2017. doi: 10.3748/wjg.v23.i14.2519
Retrospective Cohort Study
Xavier Adhoute, Guillaume Pénaranda, Jean Luc Raoul, Julien Edeline, Jean-Frédéric Blanc, Bernard Pol, Manuela Campanile, Hervé Perrier, Olivier Bayle, Olivier Monnet, Patrick Beaurain, Cyril Muller, Paul Castellani, Yves Patrice Le Treut, Jean Pierre Bronowicki, Marc Bourlière 
World J Gastroenterol 23(14):2545-2555. Published online Apr 14, 2017. doi: 10.3748/wjg.v23.i14.2545
Retrospective Study
Young Joo Yang, Chang Seok Bang, Suk Pyo Shin, Tae Young Park, Ki Tae Suk, Gwang Ho Baik, Dong Joon Kim 
World J Gastroenterol 23(14):2566-2574. Published online Apr 14, 2017. doi: 10.3748/wjg.v23.i14.2566
Clinical Trials Study
Observational Study
Michał Kukla, Marek Waluga, Michał Żorniak, Agnieszka Berdowska, Piotr Wosiewicz, Tomasz Sawczyn, Rafał J Bułdak, Marek Ochman, Katarzyna Ziora, Tadeusz Krzemiński, Marek Hartleb 
World J Gastroenterol 23(14):2613-2624. Published online Apr 14, 2017. doi: 10.3748/wjg.v23.i14.2613