1. Gynecology and Obstetrics Unit, Department of Public Health, School of Medicine University of Naples Federico II Naples Italy
2. Gynecology and Obstetrics Unit, Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine University of Naples Federico II Naples Italy
3. Department of Obstetrics and Gynecology, Center for Fetal Care and High‐Risk Pregnancy University of Chieti Chieti Italy
4. Department of Obstetrics and Gynecology, Fondazione Policlinico Tor Vergata University of Rome “Tor Vergata” Rome Italy