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Open-Access Journal
Editorial
Gianluca Pellino, Guido Sciaudone, Silvestro Canonico, Francesco Selvaggi 
World J Gastroenterol 18(15):1703-1707. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1703
Review
Original Article
Michelle Melino, Victoria L Gadd, Gene V Walker, Richard Skoien, Helen D Barrie, Dinesh Jothimani, Leigh Horsfall, Alun Jones, Matthew J Sweet, Gethin P Thomas, Andrew D Clouston, Julie R Jonsson, Elizabeth E Powell 
World J Gastroenterol 18(15):1732-1744. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1732
Chun-Ping Jiang, Hui Ding, Da-Hua Shi, Yu-Rong Wang, Er-Guang Li, Jun-Hua Wu 
World J Gastroenterol 18(15):1753-1764. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1753
Brief Article
Aleksander Krag, Hans Israelsen, Bjørn von Ryberg, Klaus K Andersen, Flemming Bendtsen 
World J Gastroenterol 18(15):1773-1780. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1773
Takafumi Ito, Ken Ohata, Akiko Ono, Hideyuki Chiba, Yosuke Tsuji, Hajime Sato, Nobuyuki Matsuhashi 
World J Gastroenterol 18(15):1789-1792. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1789
Jaudah Al-Maghrabi, Abdelbaset Buhmeida, Eman Emam, Kari Syrjänen, Abdulrahman Sibiany, Mohmmad Al-Qahtani, Mahmoud Al-Ahwal 
World J Gastroenterol 18(15):1793-1799. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1793
Tomas Hucl, Adela Saglova, Marek Benes, Matej Kocik, Martin Oliverius, Zdenek Valenta, Julius Spicak 
World J Gastroenterol 18(15):1800-1805. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1800
Xiu-Li Zuo, Zhen Li, Xiao-Ping Liu, Chang-Qing Li, Rui Ji, Peng Wang, Cheng-Jun Zhou, Han Liu, Yan-Qing Li 
World J Gastroenterol 18(15):1814-1821. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1814
Shi-Bin Guo, Zhi-Jun Duan 
World J Gastroenterol 18(15):1822-1826. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1822
Yu Zhang, Tian-Fu Wen, Lu-Nan Yan, Hong-Ji Yang, Xiao-Fan Deng, Chuan Li, Chuan Wang, Guan-Lin Liang 
World J Gastroenterol 18(15):1834-1839. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1834
Case Report
Minsu Ha, Yoon Jae Kim, Kwang An Kwon, Ki Baik Hahm, Mi-Jung Kim, Dong Kyu Kim, Young Jae Lee, S Paul Oh 
World J Gastroenterol 18(15):1840-1844. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1840
Letters To The Editor
Enver Zerem, Goran Imamović, Farid Ljuca, Jasmina Alidžanović 
World J Gastroenterol 18(15):1849-1850. Published online Apr 21, 2012. doi: 10.3748/wjg.v18.i15.1849