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Walter E Cromer, J Michael Mathis, Daniel N Granger, Ganta V Chaitanya, J Steven Alexander 
World J Gastroenterol 17(5):578-593. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.578
Franco Scaldaferri, Stefano Lancellotti, Marco Pizzoferrato, Raimondo De Cristofaro 
World J Gastroenterol 17(5):594-608. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.594
Original Article
Jan Bures, David Smajs, Jaroslav Kvetina, Miroslav Förstl, Jan Smarda, Darina Kohoutova, Martin Kunes, Jiri Cyrany, Ilja Tacheci, Stanislav Rejchrt, Jirina Lesna, Viktor Vorisek, Marcela Kopacova 
World J Gastroenterol 17(5):609-617. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.609
Lin Wang, Cui-Ling Li, Lei Wang, Wen-Bin Yu, Hai-Peng Yin, Guang-Yong Zhang, Li-Feng Zhang, Sheng Li, San-Yuan Hu 
World J Gastroenterol 17(5):625-632. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.625
Brief Article
Linda Bjork Olafsdottir, Hallgrimur Gudjonsson, Heidur Hrund Jonsdottir, Bjarni Thjodleifsson 
World J Gastroenterol 17(5):639-645. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.639
Mohammed I Yasawy, Abdelrahman E Mohammed, Sammak Bassam, Mohammed A Karawi, Sohail Shariq 
World J Gastroenterol 17(5):646-650. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.646
Nam-Kyong Choi, Yoosoo Chang, Sun-Young Jung, Yu-Kyong Choi, Joongyub Lee, Jin-Ho Lee, Ju-Young Kim, Byung-Joo Park 
World J Gastroenterol 17(5):651-656. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.651
Case Report
Giovanni D De Palma, Stefania Staibano, Saverio Siciliano, Francesco Maione, Maria Siano, Dario Esposito, Giovanni Persico 
World J Gastroenterol 17(5):677-680. Published online Feb 7, 2011. doi: 10.3748/wjg.v17.i5.677