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Open-Access Journal
Editorial
Review
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
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
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
Observational Study
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
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
Meta-Analysis
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
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
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