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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
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
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