1. Division of Maternal Fetal Medicine, Ospedale Cristo Re Università di Roma Tor Vergata Rome Italy
2. Department of Obstetrics and Gynecology The First I. M. Sechenov Moscow State Medical University Moscow Russia
3. Faculty of Health Sciences The State University of Applied Sciences in Płock Płock Poland
4. Department of Prenatal Cardiology Polish Mother's Memorial Hospital Research Institute Lodz Poland
5. Women's Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences UiT – The Arctic University of Norway Tromsø Norway
6. Department of Obstetrics and Gynecology University Hospital of Northern Norway Tromsø Norway