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Giuseppe Grande, Silvia Cocca, Helga Bertani, Angelo Caruso, Flavia Pigo', Santi Mangiafico, Salvatore Russo, Marinella Lupo, Graziella Masciangelo, Paolo Cantu', Raffaele Manta, Rita Conigliaro 
World J Gastrointest Endosc 13(2):33-44. Published online Feb 16, 2021. doi: 10.4253/wjge.v13.i2.33
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