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. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine; Sidney Kimmel Medical College of Thomas Jefferson University; Philadelphia PA USA
4. Department of Obstetrics and Gynecology, Faculty of Medicine; Laval University; Québec Canada