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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
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
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
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
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
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
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
Case Report
Letters 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