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Editorial
Perumal Nagarajan, M Jerald Mahesh Kumar, Ramasamy Venkatesan, Subeer S Majundar, Ramesh C Juyal 
World J Gastroenterol 18(11):1141-1153. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1141
Topic Highlight
Khurram Bari, Guadalupe Garcia-Tsao 
World J Gastroenterol 18(11):1166-1175. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1166
Original Article
Cesar Toledo, Carola E Matus, Ximena Barraza, Pamela Arroyo, Pamela Ehrenfeld, Carlos D Figueroa, Kanti D Bhoola, Maeva del Pozo, Maria T Poblete 
World J Gastroenterol 18(11):1208-1215. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1208
Nina Kočevar, Federico Odreman, Alessandro Vindigni, Snježana Frković Grazio, Radovan Komel 
World J Gastroenterol 18(11):1216-1228. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1216
Brief Article
Roy Nattiv, Janet M Wojcicki, Elizabeth A Garnett, Neera Gupta, Melvin B Heyman 
World J Gastroenterol 18(11):1229-1234. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1229
Isadora Rosa, Paulo Fidalgo, José Soares, Susana Vinga, Carla Oliveira, João P Silva, Susana M Ferro, Paula Chaves, António G Oliveira, Carlos N Leitão 
World J Gastroenterol 18(11):1243-1248. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1243
Yuan Hu, Li-Hua He, Di Xiao, Guo-Dong Liu, Yi-Xin Gu, Xiao-Xia Tao, Jian-Zhong Zhang 
World J Gastroenterol 18(11):1257-1261. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1257
Jing-Jing Jing, Hui-Yuan Liu, Jin-Kuan Hao, Li-Na Wang, Yun-Ping Wang, Li-Hua Sun, Yuan Yuan 
World J Gastroenterol 18(11):1262-1269. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1262
Case Report
Anna Wiechowska-Kozłowska, Ewa Wunsch, Marek Majewski, Piotr Milkiewicz 
World J Gastroenterol 18(11):1270-1272. Published online Mar 21, 2012. doi: 10.3748/wjg.v18.i11.1270