1. Department of Obstetrics and Gynaecology, University of Chieti, Chieti, Italy;
2. Department of Maternal Fetal Medicine, Ospedale Cristo Re Roma, University of Roma Tor Vergata, Rome, Italy;
3. Department of Obstetrics and Gynaecology, The First I.M. Sechenov Moscow State Medical University, Moscow, Russia;
4. Fetal Medicine Unit, Division of Developmental Sciences, St. George’s University of London, London, UK;
5. Department of Medical Sciences, University of Ferrara, Ferrara, Italy;
6. Local Health Unit of Pescara, Pescara, Italy;
7. Women´s Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Sciences, Women’S Health and Perinatology Research Group, UiT – The Arctic University of Norway, Tromsø, Norway;
8. Department of Obstetrics and Gynaecology, University Hospital of Northern Norway, Tromsø, Norway