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Open-Access Journal
Editorial
Review
Basic Study
Petra Talapka, Anikó Berkó, Lajos István Nagy, Lalitha Chandrakumar, Mária Bagyánszki, László Géza Puskás, Éva Fekete, Nikolett Bódi 
World J Gastroenterol 22(22):5154-5164. Published online Jun 14, 2016. doi: 10.3748/wjg.v22.i22.5154
Case Control Study
Tian-Hui Zou, Ru-Hua Zheng, Qin-Yan Gao, Xuan Kong, Xiao-Yu Chen, Zhi-Zheng Ge, Ying-Xuan Chen, Xiao-Ping Zou, Jing-Yuan Fang 
World J Gastroenterol 22(22):5228-5236. Published online Jun 14, 2016. doi: 10.3748/wjg.v22.i22.5228
Retrospective Cohort Study
Ishibe Atsushi, Ota Mitsuyoshi, Yamaguchi Kazuya, Kaida Syuhei, Kamiya Noriyuki, Momiyama Masashi, Watanabe Akira, Sekizawa Kentaro, Kamimukai Nobuyuki, Sugimasa Natsuko, Watanabe Jun, Ichikawa Yasushi, Kunisaki Chikara, Endo Itaru 
World J Gastroenterol 22(22):5237-5245. Published online Jun 14, 2016. doi: 10.3748/wjg.v22.i22.5237
Retrospective Study
Clinical Trials Study
Observational Study
Daniela Simian, Daniela Fluxá, Lilian Flores, Jaime Lubascher, Patricio Ibáñez, Carolina Figueroa, Udo Kronberg, Raúl Acuña, Mauricio Moreno, Rodrigo Quera 
World J Gastroenterol 22(22):5267-5275. Published online Jun 14, 2016. doi: 10.3748/wjg.v22.i22.5267
Meta-Analysis
Case Report