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Open-Access Journal
Editorial
Review
Minireviews
Basic Study
Jun-Xiao Zhang, Lei Fu, Richarda M de Voer, Marc-Manuel Hahn, Peng Jin, Chen-Xi Lv, Eugène TP Verwiel, Marjolijn JL Ligtenberg, Nicoline Hoogerbrugge, Roland P Kuiper, Jian-Qiu Sheng, Ad Geurts van Kessel 
World J Gastroenterol 21(14):4136-4149. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4136
Susan Lapthorne, Julie E Bines, Fiona Fouhy, Nicole L Dellios, Guineva Wilson, Sarah L Thomas, Michelle Scurr, Catherine Stanton, Paul D Cotter, Prue M Pereira-Fantini 
World J Gastroenterol 21(14):4150-4158. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4150
Yan-Qiang Huang, Gan-Rong Huang, Ming-Hui Wu, Hua-Ying Tang, Zan-Song Huang, Xi-Han Zhou, Wen-Qiang Yu, Jian-Wei Su, Xiao-Qiang Mo, Bing-Pu Chen, Li-Juan Zhao, Xiao-Feng Huang, Hong-Yu Wei, Lian-Deng Wei 
World J Gastroenterol 21(14):4225-4231. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4225
Case Control Study
Retrospective Study
Prospective Study
Min-Young Lee, Ki Sun Jung, Hae Su Kim, Ji Yun Lee, Sung Hee Lim, Moonjin Kim, Hyun Ae Jung, Sung Min Kim, Jong Mu Sun, Myung-Ju Ahn, Jeeyun Lee, Se Hoon Park, Seong Yoon Yi, In Gyu Hwang, Sang-Cheol Lee, Hee Kyung Ahn, Do Hyoung Lim, Soon Il Lee, Keon Woo Park 
World J Gastroenterol 21(14):4268-4274. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4268
Systematic Reviews
Meta-Analysis
Case Report
Andrea Taddio, Alberto Tommasini, Erica Valencic, Ettore Biagi, Giuliana Decorti, Sara De Iudicibus, Eva Cuzzoni, Giuseppe Gaipa, Raffaela Badolato, Alberto Prandini, Andrea Biondi, Alessandro Ventura 
World J Gastroenterol 21(14):4379-4384. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4379
Akinori Shirahige, Haruhisa Suzuki, Ichiro Oda, Masau Sekiguchi, Genki Mori, Seiichiro Abe, Satoru Nonaka, Shigetaka Yoshinaga, Shigeki Sekine, Ryoji Kushima, Yutaka Saito, Takeo Fukagawa, Hitoshi Katai 
World J Gastroenterol 21(14):4385-4390. Published online Apr 14, 2015. doi: 10.3748/wjg.v21.i14.4385
Letters To The Editor