1. Department of Neuroscience, Reproductive Sciences and Dentistry; School of Medicine; University of Naples Federico II; Naples Italy
2. Department of Obstetrics and Gynecology; Lehigh Valley Health Network; Allentown PA USA
3. Department of Obstetrics and Gynecology; Dr. Horacio E. Oduber Hospital; Oranjestad Aruba
4. Division of Maternal-Fetal Medicine; Department of Obstetrics and Gynecology; Sidney Kimmel Medical College of Thomas Jefferson University; Philadelphia PA USA