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Topic Highlight
Carla Guarinos, Cristina Sánchez-Fortún, María Rodríguez-Soler, Cristina Alenda, Artemio Payá, Rodrigo Jover 
World J Gastroenterol 18(20):2452-2461. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2452
Review
Original Article
Chompoonut Sunanliganon, Duangporn Thong-Ngam, Somying Tumwasorn, Naruemon Klaikeaw 
World J Gastroenterol 18(20):2472-2480. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2472
Hong-Yan Qin, Hai-Tao Xiao, Justin CY Wu, Brian M Berman, Joseph JY Sung, Zhao-Xiang Bian 
World J Gastroenterol 18(20):2481-2492. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2481
Juan Yang, Wen-Qiang Wei, Jin Niu, Zhi-Cai Liu, Chun-Xia Yang, You-Lin Qiao 
World J Gastroenterol 18(20):2493-2501. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2493
Brief Article
Chao Zhou, Tejas Kirtane, Tsung-Han Tsai, Hsiang-Chieh Lee, Desmond C Adler, Joseph M Schmitt, Qin Huang, James G Fujimoto, Hiroshi Mashimo 
World J Gastroenterol 18(20):2502-2510. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2502
Kalle Kurppa, Tiia Räsänen, Pekka Collin, Sari Iltanen, Heini Huhtala, Merja Ashorn, Päivi Saavalainen, Katri Haimila, Jukka Partanen, Markku Mäki, Katri Kaukinen 
World J Gastroenterol 18(20):2511-2516. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2511
Masahiro Tajika, Yasumasa Niwa, Vikram Bhatia, Hiroki Kawai, Shinya Kondo, Akira Sawaki, Nobumasa Mizuno, Kazuo Hara, Susumu Hijioka, Kazuya Matsumoto, Yuji Kobayashi, Akira Saeki, Asana Akabane, Koji Komori, Kenji Yamao 
World J Gastroenterol 18(20):2517-2525. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2517
Tian Yang, Jun-Hua Lu, Chuan Lin, Song Shi, Ting-Hao Chen, Rong-Hua Zhao, Yi Wang, Meng-Chao Wu 
World J Gastroenterol 18(20):2533-2539. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2533
Nan Cai, Guo-Zhong Ji, Zhi-Ning Fan, Yan-Feng Wu, Fa-Ming Zhang, Zhi-Fei Zhao, Wei Xu, Zheng Liu 
World J Gastroenterol 18(20):2545-2553. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2545
Xiao-Jing Li, Yan-Ling He, Hong Ma, Zhe-Ning Liu, Fu-Jun Jia, Ling Zhang, Lan Zhang 
World J Gastroenterol 18(20):2561-2568. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2561
Jing Jiang, Mei-Shan Jin, Jian Suo, Yin-Ping Wang, Liang He, Xue-Yuan Cao 
World J Gastroenterol 18(20):2569-2575. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2569
Hui-Wen Wu, Ke-Ming Yun, De-Wu Han, Rui-Ling Xu, Yuan-Chang Zhao 
World J Gastroenterol 18(20):2576-2581. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2576
Case Report
Jadwiga Snarska, Krzysztof Jacyna, Jacek Janiszewski, Danuta Shafie, Katarzyna Iwanowicz, Anna Żurada 
World J Gastroenterol 18(20):2582-2585. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2582
Koichi Honda, Masataka Seike, Shin-ichiro Maehara, Koichiro Tahara, Hideaki Anai, Akira Moriuchi, Toyokichi Muro 
World J Gastroenterol 18(20):2586-2590. Published online May 28, 2012. doi: 10.3748/wjg.v18.i20.2586