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Matteo Ravaioli, Giorgio Ercolani, Flavia Neri, Matteo Cescon, Giacomo Stacchini, Massimo Del Gaudio, Alessandro Cucchetti, Antonio Daniele Pinna 
World J Gastroenterol 20(18):5345-5352. Published online May 14, 2014. doi: 10.3748/wjg.v20.i18.5345
Alice Tung Wan Song, Vivian Iida Avelino-Silva, Rafael Antonio Arruda Pecora, Vincenzo Pugliese, Luiz Augusto Carneiro D’Albuquerque, Edson Abdala 
World J Gastroenterol 20(18):5363-5374. Published online May 14, 2014. doi: 10.3748/wjg.v20.i18.5363
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