1. Department of Obstetrics and Gynecology, School of Medicine, University of Salerno, Salerno, Italy;
2. Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples “Federico II”, Naples, Italy;
3. Theoreo srl, Spin-Off Company of the University of Salerno, Salerno, Italy;
4. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA