1. Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine; University of Naples Federico II; Naples Italy
2. Department of Obstetrics and Gynecology Women's Health and Perinatology Research Group, University Hospital of Northern Norway; University of Northern Norway; Tromsø Norway
3. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Sidney Kimmel Medical College; Thomas Jefferson University; Philadelphia PA USA