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Open-Access Journal
Editorial
Michele Orditura, Gennaro Galizia, Eva Lieto, Ferdinando De Vita, Fortunato Ciardiello 
World J Gastroenterol 21(15):4427-4431. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4427
Cristiane Valle Tovo, Angelo Zambam de Mattos, Gabriela Perdomo Coral, Fernanda Schild Branco, Eiji Suwa, Angelo Alves de Mattos 
World J Gastroenterol 21(15):4432-4439. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4432
Therapeutics Advances
Say-June Kim, Sang Chul Lee 
World J Gastroenterol 21(15):4440-4446. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4440
Topic Highlight
Stefano Fagiuoli, Roberto Ravasio, Maria Grazia Lucà, Anna Baldan, Silvia Pecere, Alessandro Vitale, Luisa Pasulo 
World J Gastroenterol 21(15):4447-4456. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4447
Review
Rolf Teschke, Albrecht Wolff, Christian Frenzel, Axel Eickhoff, Johannes Schulze 
World J Gastroenterol 21(15):4466-4490. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4466
Basic Study
Elke Kaemmerer, Paula Kuhn, Ursula Schneider, Min Kyung Jeon, Christina Klaus, Miriam Schiffer, Danika Weisner, Christian Liedtke, Jörg Jäkel, Lieven Nils Kennes, Ralf-Dieter Hilgers, Norbert Wagner, Nikolaus Gassler 
World J Gastroenterol 21(15):4499-4508. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4499
Lin Zhai, Lan-Yan Qiu, Yuan Zu, Yan Yan, Xiao-Zhuan Ren, Jun-Feng Zhao, Yu-Jiang Liu, Ji-Bin Liu, Lin-Xue Qian 
World J Gastroenterol 21(15):4509-4516. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4509
Min Li, Qi Wang, Shun-Ai Liu, Jin-Qian Zhang, Wei Ju, Min Quan, Sheng-Hu Feng, Jin-Ling Dong, Ping Gao, Jun Cheng 
World J Gastroenterol 21(15):4517-4525. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4517
Pei-Fang Cong, Ying-Chun Qu, Jie-Peng Chen, Li-Li Duan, Cheng-Jiang Lin, Xiao-Lin Zhu, Jesse Li-Ling, Mei-Xia Zhang 
World J Gastroenterol 21(15):4526-4535. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4526
Chun-Yan Rao, Lan-Ying Fu, Chang-Lun Hu, Dai-Xing Chen, Tian Gan, Yi-Cheng Wang, Xiao-Yan Zhao 
World J Gastroenterol 21(15):4555-4563. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4555
Retrospective Study
Richard A Schatz, Qing Zhang, Nilesh Lodhia, Jonathan Shuster, Phillip P Toskes, Baharak Moshiree 
World J Gastroenterol 21(15):4574-4582. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4574
Tsutomu Kanefuji, Toru Takano, Takeshi Suda, Kouhei Akazawa, Takeshi Yokoo, Hiroteru Kamimura, Kenya Kamimura, Atsunori Tsuchiya, Masaaki Takamura, Hirokazu Kawai, Satoshi Yamagiwa, Hidefumi Aoyama, Minoru Nomoto, Shuji Terai 
World J Gastroenterol 21(15):4583-4591. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4583
Hee-Won Kwak, Il Ju Choi, Chan Gyoo Kim, Jong Yeul Lee, Soo-Jeong Cho, Bang Wool Eom, Hong Man Yoon, Jungnam Joo, Keun Won Ryu, Young-Woo Kim 
World J Gastroenterol 21(15):4592-4598. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4592
Soumana C Nasser, Mahmoud Slim, Jeanette G Nassif, Selim M Nasser 
World J Gastroenterol 21(15):4599-4606. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4599
Fei Tian, Jian-Xiong Wu, Wei-Qi Rong, Li-Ming Wang, Fan Wu, Wei-Bo Yu, Song-Lin An, Fa-Qiang Liu, Li Feng, Chao Bi, Yun-He Liu 
World J Gastroenterol 21(15):4607-4619. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4607
Xiao-Dong He, Jing-Jing Li, Wei Liu, Qiang Qu, Tao Hong, Xie-Qun Xu, Bing-Lu Li, Ying Wang, Hai-Tao Zhao 
World J Gastroenterol 21(15):4620-4626. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4620
Jing-Hang Jiang, Zhe Guo, Hao-Feng Lu, Xiao-Bo Wang, Hao-Jie Yang, Fu-Quan Yang, Si-Yang Bao, Jian-Hong Zhong, Le-Qun Li, Ri-Rong Yang, Bang-De Xiang 
World J Gastroenterol 21(15):4627-4634. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4627
Clinical Trials Study
Scott Bowden, Stephen Locarnini, Ting-Tsung Chang, You-Chen Chao, Kwang-Hyub Han, Robert G Gish, Robert A de Man, Miao Yu, Cyril Llamoso, Hong Tang 
World J Gastroenterol 21(15):4644-4651. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4644
Xiu-Juan Yan, Wen-Ting Li, Xin Chen, Er-Man Wang, Qing Liu, Hong-Yi Qiu, Zhi-Jun Cao, Sheng-Liang Chen 
World J Gastroenterol 21(15):4652-4659. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4652
Fu-Cheng He, Wei-Wei Meng, Yun-Hui Qu, Ming-Xia Zhou, Jing He, Pin Lv, Liang Ming 
World J Gastroenterol 21(15):4660-4665. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4660
Observational Study
Juan C Andreu-Ballester, Rafael Gil-Borrás, Carlos García-Ballesteros, Ignacio Catalán-Serra, Victoria Amigo, Virgina Fernández-Fígares, Carmen Cuéllar 
World J Gastroenterol 21(15):4666-4672. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4666
Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Toshiyuki Kosuga, Hirotaka Konishi, Atsushi Shiozaki, Hitoshi Fujiwara, Kazuma Okamoto, Mitsuo Kishimoto, Eigo Otsuji 
World J Gastroenterol 21(15):4673-4679. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4673
Yang-Kun Wang, Zhong Chen, Tian Yun, Cong-Yang Li, Bo Jiang, Xue-Xia Lv, Guang-Hui Chu, Su-Nan Wang, Hui Yan, Lei-Feng Shi 
World J Gastroenterol 21(15):4680-4687. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4680
Prospective Study
Lucia Pacifico, Michele Di Martino, Caterina Anania, Gian Marco Andreoli, Mario Bezzi, Carlo Catalano, Claudio Chiesa 
World J Gastroenterol 21(15):4688-4695. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4688
Koji Takayama, Norihiro Furusyo, Eiichi Ogawa, Hiroaki Ikezaki, Motohiro Shimizu, Masayuki Murata, Jun Hayashi 
World J Gastroenterol 21(15):4696-4706. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4696
Randomized Controlled Trial
Shotaro Umezawa, Takuma Higurashi, Shiori Uchiyama, Eiji Sakai, Hidenori Ohkubo, Hiroki Endo, Takashi Nonaka, Atsushi Nakajima 
World J Gastroenterol 21(15):4707-4714. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4707
Qi-Sheng Zhang, Bing Han, Jian-Hua Xu, Peng Gao, Yu-Cui Shen 
World J Gastroenterol 21(15):4715-4721. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4715
Systematic Reviews
Mohan Ramchandani, Duvvur Nageshwar Reddy, Sundeep Lakhtakia, Manu Tandan, Amit Maydeo, Thoguluva Seshadri Chandrashekhar, Ajay Kumar, Randhir Sud, Rungsun Rerknimitr, Dadang Makmun, Christopher Khor 
World J Gastroenterol 21(15):4722-4734. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4722
SYSTEMATIC REVIEWS
Meta-Analysis
Xiao-Wei Wu, Hong-Zan Ji, Miao-Fang Yang, Lin Wu, Fang-Yu Wang 
World J Gastroenterol 21(15):4750-4756. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4750
Xu-Feng Deng, Quan-Xing Liu, Dong Zhou, Jia-Xin Min, Ji-Gang Dai 
World J Gastroenterol 21(15):4757-4764. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4757
Case Report
Letter to the Editor
Bulent Yilmaz, Emir Charles Roach, Seyfettin Koklu, Onur Aydin, Ozan Unlu, Yusuf Alper Kilic 
World J Gastroenterol 21(15):4770-4772. Published online Apr 21, 2015. doi: 10.3748/wjg.v21.i15.4770
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