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Open-Access Journal
Editorial
Hugh James Freeman, Angeli Chopra, Michael Tom Clandinin, Alan BR Thomson 
World J Gastroenterol 17(18):2259-2272. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2259
Ignazio Grattagliano, Enzo Ubaldi, Leonilde Bonfrate, Piero Portincasa 
World J Gastroenterol 17(18):2273-2282. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2273
Topic Highlight
Henry Cohen, Roque Saenz, Luiz E de Almeida Troncon, Maribel Lizarzabal, Carolina Olano 
World J Gastroenterol 17(18):2283-2287. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2283
Review
Original Article
Martin Raithel, Harald Dormann, Andreas Naegel, Frank Boxberger, Eckhart G Hahn, Markus F Neurath, Juergen Maiss 
World J Gastroenterol 17(18):2302-2314. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2302
Bao-He Zhu, Hua-Yun Chen, Wen-Hua Zhan, Cheng-You Wang, Shi-Rong Cai, Zhao Wang, Chang-Hua Zhang, Yu-Long He 
World J Gastroenterol 17(18):2315-2325. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2315
Rui Chen, Fu-Kang Luo, Ya-Li Wang, Jin-Liang Tang, You-Sheng Liu 
World J Gastroenterol 17(18):2326-2331. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2326
Brief Article
Kensuke Takuma, Terumi Kamisawa, Taku Tabata, Yoshihiko Inaba, Naoto Egawa, Yoshinori Igarashi 
World J Gastroenterol 17(18):2332-2337. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2332
Norifumi Harimoto, Ken Shirabe, Tomoyuki Abe, Takafumi Yukaya, Eiji Tsujita, Tomonobu Gion, Kiyoshi Kajiyama, Takashi Nagaie 
World J Gastroenterol 17(18):2338-2342. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2338
Ling Yuan, Dan Cui, Er-Jiang Zhao, Chen-Zhi Jia, Li-Dong Wang, Wei-Quan Lu 
World J Gastroenterol 17(18):2343-2348. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2343
Case Report
Stavros Peroukides, Thomas Makatsoris, Angelos Koutras, Athanasios Tsamandas, Adimchi Onyenadum, Chryssoula Labropoulou-Karatza, Haralabos Kalofonos 
World J Gastroenterol 17(18):2349-2352. Published online May 14, 2011. doi: 10.3748/wjg.v17.i18.2349
Letters To The Editor