2 Department of Obstetrics and Gynecology, "Filippo Del Ponte" Hospital, University of Insubria, Piazza Biroldi 1, 21100, Varese, Italy.
3 Department of Obstetrics and Gynecology, "Filippo Del Ponte" Hospital, University of Insubria, Piazza Biroldi 1, 21100, Varese, Italy. antoniosimone.lagana@uninsubria.it.
4 Department of Obstetrics and Gynecology, AOUI Verona, University of Verona, Verona, Italy.