1 Gastroenterology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123, Brescia, Italy. barbara.zanini@unibs.it.
2 Institute of Pathology Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
3 Gastroenterology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.