1. Fetal Medicine Unit, Department of Obstetrics and Gynaecology University of Foggia Foggia Italy
2. Department of Obstetrics and Gynaecology Fondazione Policlinico Tor Vergata Università Roma Tor Vergata Roma Rome Italy
3. Fetal Medicine Unit Saint George's Hospital London UK
4. Centre for High‐Risk Pregnancy and Fetal Care, Department of Obstetrics and Gynaecology University of Chieti Chieti Italy