1. Fetal Medicine & Surgery Unit; Istituto G.Gaslini; Genoa Italy
2. Department of Women's and Children's Health, Institute of Translational Medicine; University of Liverpool; Liverpool UK
3. Fetal Medicine Unit; St George's Hospital and St George's University of London; London UK
4. Centre for Fetal Cardiology; Royal Brompton Hospital; London UK
5. OB-GYN Ultrasound Unit, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center and Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
6. Fetal Medicine, Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Clínic and Sant Joan de Déu; University of Barcelona; Barcelona Spain
7. Fetal Heart Program; Children's Hospital of Philadelphia; Philadelphia, PA USA
8. Maternité, Hôpital Universitaire Necker-Enfants Malades, Université Paris Descartes, Assistance Publique-Hôpitaux de Paris; Paris France
9. The Fetal Center, University of Texas Health Science Center at Houston; Houston, TX USA