1. Department of Medicine and Surgery, Unit of Surgical Sciences, Obstetrics and Gynecology University of Parma Parma Italy
2. Center for Fetal Care and High Risk Pregnancy, Department of Obstetrics and Gynecology University of Chieti Chieti Italy
3. Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine University of Naples Federico II Naples Italy
4. Department of Medical Sciences University of Ferrara Ferrara Italy