1. Department of Health Science; Division of Pediatrics, Obstetrics and Gynecology; Careggi Hospital University of Florence; Florence 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; Thomas Jefferson University; Philadelphia PA USA