1 Division of Obstetrics and Gynecology, Department of Clinical and Experimental Sciences, ASST Spedali Civili and University of Brescia, P.le Spedali Civili 1, 25123, Brescia, Italy.
2 Division of Obstetrics and Gynecology, Department of Clinical and Experimental Sciences, ASST Spedali Civili and University of Brescia, P.le Spedali Civili 1, 25123, Brescia, Italy. federico.prefumo@unibs.it.