1. Department of OB&GYN, Division of Prenatal Medicine, University-Hospitals Gießen and Marburg Campus Gießen, Germany
2. Fetal Cardiology Unit, Ukrainian Children’s Hospital, Kyiv, UA, Kyiv, Ukraine
3. Prenatal Plus, Prenatal Care Center Cologne, Germany
4. Prenatal Medicine, Prenatal Care Center Stuttgart, Germany
5. Prenatal Care Center, amedes Hamburg, Germany
6. Fetal Cardiology, Polish Mother Memorial Hospital Research Institute, Lodz, Poland
7. Department of Prenatal Cardiology, Polish Mother’s Memorial Hospital Research Institute, Lodz, Poland