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Open-Access Journal
Editorial
Ivan Kristo, Anton Stift, Michael Bergmann, Stefan Riss 
World J Gastroenterol 21(20):6097-6100. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6097
Review
Colin T Baillie, Jennifer A Smith 
World J Gastroenterol 21(20):6101-6116. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6101
Dmitry Victorovich Garbuzenko 
World J Gastroenterol 21(20):6117-6126. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6117
Andrada Seicean, Livia Petrusel, Radu Seicean 
World J Gastroenterol 21(20):6127-6145. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6127
Olga A Sukocheva, Bin Li, Steven L Due, Damian J Hussey, David I Watson 
World J Gastroenterol 21(20):6146-6156. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6146
Basic Study
Linda S Gutierrez, Jun Ling, Derek Nye, Konstantina Papathomas, Catherine Dickinson 
World J Gastroenterol 21(20):6157-6166. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6157
Amr Amin, Asma Bashir, Nazar Zaki, Diane McCarthy, Sanjida Ahmed, Mohamed Lotfy 
World J Gastroenterol 21(20):6167-6179. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6167
Jian-An Bai, Gui-Fang Xu, Li-Jun Yan, Wei-Wen Zeng, Qian-Qian Ji, Jin-Dao Wu, Qi-Yun Tang 
World J Gastroenterol 21(20):6180-6193. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6180
Guang-Ming Huang, Yu Sun, Xin Ge, Xin Wan, Chun-Bo Li 
World J Gastroenterol 21(20):6194-6205. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6194
Chao Li, Da-Ren Liu, Guo-Gang Li, Hou-Hong Wang, Xiao-Wen Li, Wei Zhang, Yu-Lian Wu, Li Chen 
World J Gastroenterol 21(20):6215-6228. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6215
Retrospective Cohort Study
Seak Hee Oh, Soo-Hee Chang, Hyun Jin Kim, Jin Min Cho, Ji-Hee Hwang, Jung-Man Namgoong, Dae Yeon Kim, Young-Ah Cho, Chong Hyun Yoon, Kyung Mo Kim 
World J Gastroenterol 21(20):6229-6235. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6229
Retrospective Study
Kieron BL Lim, Hamid R Sima, M Isabel Fiel, Viktoriya Khaitova, John T Doucette, Maria Chernyiak, Jawad Ahmad, Nancy Bach, Charissa Chang, Priya Grewal, Leona Kim-Schluger, Lawrence Liu, Joseph Odin, Ponni Perumalswami, Sander S Florman, Thomas D Schiano 
World J Gastroenterol 21(20):6236-6245. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6236
Minoru Tomizawa, Fuminobu Shinozaki, Rumiko Hasegawa, Yoshinori Shirai, Yasufumi Motoyoshi, Takao Sugiyama, Shigenori Yamamoto, Naoki Ishige 
World J Gastroenterol 21(20):6246-6251. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6246
Hirofumi Harima, Seiji Kaino, Shuhei Shinoda, Michitaka Kawano, Shigeyuki Suenaga, Isao Sakaida 
World J Gastroenterol 21(20):6252-6260. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6252
Dong Jun Kim, Hyung Wook Kim, Su Bum Park, Dae Hwan Kang, Cheol Woong Choi, Joung Boom Hong, Byoung Hoon Ji, Chang Seok Lee 
World J Gastroenterol 21(20):6261-6270. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6261
Peng Wang, Qiao Shi, Wen-Hong Deng, Jia Yu, Teng Zuo, Fang-Chao Mei, Wei-Xing Wang 
World J Gastroenterol 21(20):6271-6279. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6271
Liang Yu, Cheng-Yu Lv, Ai-Hua Yuan, Wei Chen, An-Wei Wu 
World J Gastroenterol 21(20):6280-6286. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6280
Observational Study
Min-Sun Kwak, Donghee Kim, Goh Eun Chung, Won Kim, Yoon Jun Kim, Jung-Hwan Yoon 
World J Gastroenterol 21(20):6287-6295. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6287
Yan-Hua Lai, Wei-Dong Duan, Qiang Yu, Sheng Ye, Nian-Jun Xiao, Dong-Xin Zhang, Zhi-Qiang Huang, Zhan-Yu Yang, Jia-Hong Dong 
World J Gastroenterol 21(20):6296-6303. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6296
Hong-Liang Wang, Kai-Jiang Yu 
World J Gastroenterol 21(20):6304-6309. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6304
Randomized Controlled Trial
Xiao-Min Liao, Gao-Hui Nong, Mei-Zu Chen, Xue-Ping Huang, Yun-Yan Cong, Yi-Ying Huang, Bai-He Wu, Jin-Qi Wei 
World J Gastroenterol 21(20):6310-6316. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6310
Systematic Reviews
Shan-Long Ding, Zi-Wei Yang, Jie Wang, Xiao-Lei Zhang, Xiang-Mei Chen, Feng-Min Lu 
World J Gastroenterol 21(20):6317-6328. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6317
Meta-Analysis
Da-Wei Li, Tian-Fei Lu, Xiang-Wei Hua, Hui-Juan Dai, Xiao-Lan Cui, Jian-Jian Zhang, Qiang Xia 
World J Gastroenterol 21(20):6329-6340. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6329
Ying-Shi Zhang, Qing Li, Bo-Sai He, Ran Liu, Zuo-Jing Li 
World J Gastroenterol 21(20):6341-6351. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6341
Yu Jin, Yan Lin, Lian-Jie Lin, Chang-Qing Zheng 
World J Gastroenterol 21(20):6352-6360. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6352
Wei Huang, Jun-Jie Xiong, Mei-Hua Wan, Peter Szatmary, Shameena Bharucha, Ilias Gomatos, Quentin M Nunes, Qing Xia, Robert Sutton, Xu-Bao Liu 
World J Gastroenterol 21(20):6361-6373. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6361
Ben-Zu Hong, Xin-Feng Li, Jian-Qing Lin 
World J Gastroenterol 21(20):6374-6380. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6374
Case Report
Amandine Luquiens, Nelson Lourenco, Amine Benyamina, Henri-Jean Aubin 
World J Gastroenterol 21(20):6381-6383. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6381
Sophie Schneitler, Patric Kröpil, Jasmin Riemer, Gerald Antoch, Wolfram Trudo Knoefel, Dieter Häussinger, Dirk Graf 
World J Gastroenterol 21(20):6384-6390. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6384
Guilherme Lopes P Martins, Joao Paulo G Bernardes, Marcello S Rovella, Raphael G Andrade, Publio Cesar C Viana, Paulo Herman, Giovanni Guido Cerri, Marcos Roberto Menezes 
World J Gastroenterol 21(20):6391-6397. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6391
Sung Bum Kim, Myung Jin Oh, Si Hyung Lee 
World J Gastroenterol 21(20):6398-6403. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6398
Su-Sin Jin, Hyeong-Seok Jeong, Hyun-Jin Noh, Woo-Hyung Choi, Seung-Hwa Choi, Kang-Yeon Won, Dong-Pil Kim, Ji-Chan Park, Mi-Kyong Joung, Jeong-Goo Kim, Hae-Joung Sul, Seung-Woo Lee 
World J Gastroenterol 21(20):6404-6408. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6404
Jiang Li, Jin-Zhen Cai, Qing-Jun Guo, Jun-Jie Li, Xiao-Ye Sun, Zhan-Dong Hu, David KC Cooper, Zhong-Yang Shen 
World J Gastroenterol 21(20):6409-6416. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6409
Tao-Zhen He, Chang Xu, Yi Ji, Xiao-Yan Sun, Min Liu 
World J Gastroenterol 21(20):6417-6421. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6417
Tian Shen, Xiao-Wen Feng, Lei Geng, Shu-Sen Zheng 
World J Gastroenterol 21(20):6422-6426. Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6422
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