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Mauro Manno, Carmelo Barbera, Helga Bertani, Raffaele Manta, Vincenzo Giorgio Mirante, Emanuele Dabizzi, Angelo Caruso, Flavia Pigo, Giampiero Olivetti, Rita Conigliaro 
World J Gastrointest Endosc 4(2):28-32. Published online Feb 16, 2012. doi: 10.4253/wjge.v4.i2.28
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