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Open-Access Journal
Editorial
Topic Highlight
Lucas Faria Abrahao-Machado, Cristovam Scapulatempo-Neto 
World J Gastroenterol 22(19):4619-4625. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4619
Review
Nicole MF van Gerven, Ynto S de Boer, Chris JJ Mulder, Carin MJ van Nieuwkerk, Gerd Bouma 
World J Gastroenterol 22(19):4651-4661. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4651
Basic Study
David Coyle, Justin M Murphy, Brian Doyle, Anne Marie O’Donnell, John Gillick, Prem Puri 
World J Gastroenterol 22(19):4662-4672. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4662
Michael JJ Chu, Rakesh Premkumar, Anthony JR Hickey, Yannan Jiang, Brett Delahunt, Anthony RJ Phillips, Adam SJR Bartlett 
World J Gastroenterol 22(19):4673-4684. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4673
Seyed Soheil Saeedi Saravi, Mahmoud Ghazi-Khansari, Shahram Ejtemaei Mehr, Maliheh Nobakht, Seyyedeh Elaheh Mousavi, Ahmad Reza Dehpour 
World J Gastroenterol 22(19):4685-4694. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4685
Tao Wu, Jun-Ming Chen, Tie-Gang Xiao, Xiang-Bing Shu, Han-Chen Xu, Li-Li Yang, Lian-Jun Xing, Pei-Yong Zheng, Guang Ji 
World J Gastroenterol 22(19):4695-4706. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4695
Liang Ma, Xiu-Jun Cai, Hai-Hong Wang, Yan-Lan Yu, Di-Yu Huang, Guang-Ju Ge, Hai-Yi Hu, Shi-Cheng Yu 
World J Gastroenterol 22(19):4707-4715. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4707
Retrospective Cohort Study
Christine M Hunt, Lauren A Beste, Elliott Lowy, Ayako Suzuki, Cynthia A Moylan, Hans L Tillmann, George N Ioannou, Joseph K Lim, Michael J Kelley, Dawn Provenzale 
World J Gastroenterol 22(19):4732-4740. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4732
Retrospective Study
Yi Dong, Wen-Ping Wang, Vito Cantisani, Mirko D’Onofrio, Andre Ignee, Lorenzo Mulazzani, Adrian Saftoiu, Zeno Sparchez, Ioan Sporea, Christoph F Dietrich 
World J Gastroenterol 22(19):4741-4749. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4741
Bo Ye, Chen-Xi Zhong, Yu Yang, Wen-Tao Fang, Teng Mao, Chun-Yu Ji, Zhi-Gang Li 
World J Gastroenterol 22(19):4750-4756. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4750
Observational Study
Rong-Rong Ren, Gang Sun, Yun-Sheng Yang, Li-Hua Peng, Shu-Fang Wang, Xiao-Hong Shi, Jing-Quan Zhao, Yong-Ling Ban, Fei Pan, Xue-Hong Wang, Wei Lu, Jian-Lin Ren, Ying Song, Jiang-Bin Wang, Qi-Ming Lu, Wen-Yuan Bai, Xiao-Ping Wu, Zi-Kai Wang, Xiao-Mei Zhang, Ye Chen 
World J Gastroenterol 22(19):4757-4765. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4757
Meta-Analysis
Case Report
Joong Keun Kim, Dong Hoon Baek, Bong Eun Lee, Gwang Ha Kim, Geun Am Song, Do Youn Park 
World J Gastroenterol 22(19):4776-4780. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4776
Ta-Wei Yang, Yen-Yue Lin, Yi-Wei Tsuei, Yen-Lin Chen, Cheng-Yi Huang, Sheng-Der Hsu 
World J Gastroenterol 22(19):4781-4785. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4781
Letters To The Editor
Georgios N Kalambokis, Gerasimos Baltayiannis, Dimitrios Christodoulou 
World J Gastroenterol 22(19):4786-4788. Published online May 21, 2016. doi: 10.3748/wjg.v22.i19.4786