1 Department of Obstetrics and Gynecology, ASST Vimercate, Vittorio Emanuele III Hospital, University of Milano-Bicocca, Monza, Monza-Brianza, Italy - sara.consonni@gmail.com.
2 Department of Obstetrics and Gynecology, MBBM Foundation, University of Milano-Bicocca, Monza, Monza-Brianza, Italy.
3 Statistics, University of Milano-Bicocca, Monza, Monza-Brianza, Italy.
4 Department of Obstetrics and Gynecology, ASST Vimercate, Vittorio Emanuele III Hospital, University of Milano-Bicocca, Monza, Monza-Brianza, Italy.