1. Department of Obstetrics and Gynecology, Catholic University of Sacred Heart, Rome, Italy;
2. Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, Naples, Italy;
3. Department of Obstetrics and Gynecology, University of Sapienza, Rome, Italy;
4. Department of Experimental Clinical and Medical Science, DISM, Clinic of Obstetrics and Gynecology, University of Udine, Udine, Italy;
5. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA