1. Department of Public Health, School of Medicine, University of Naples “Federico II”, Naples, Italy;
2. Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples “Federico II”, Naples, Italy;
3. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, USA;
4. Department of Clinical and Experimental Medicine, University of Catanzaro “Magna Graecia”, Catanzaro, Italy