1. Saarland University, Homburg, Germany
2. University Children’s Hospital Muenster, Muenster, Germany
3. German Heart Center Berlin, Berlin, Germany
4. Charité University Medicine Berlin, Berlin, Germany
5. University Children’s Hospital Regensburg, Regensburg, Germany
6. Johannes Kepler University, Linz, Austria
7. Competence Network for Congenital Heart Defects, Berlin, Germany
8. Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
9. Heart Center Leipzig, Leipzig, Germany
10. University Hospital Cologne, Cologne, Germany
11. St. Vincenz Hospital, Limburg, Germany
12. Klinikum Chemnitz, Chemnitz, Germany
13. RoMed Klinikum, Rosenheim, Germany
14. University Children’s Hospital Duesseldorf, Duesseldorf, Germany
15. Klinikum Westbrandenburg, Potsdam, Germany
16. CaritasKlinikum St. Theresia, Saarbrücken, Germany
17. University of Ljubljana, Ljubljana, Slovenia
18. Hadassah Medical Center, Jerusalem, Israel
19. Shaare Zedek Medical Center, Jerusalem, Israel
20. Hadassah Hebrew University Hospital, Jerusalem, Israel
21. Klinikum Kempten, Kempten, Germany
22. University Hospital Tübingen, Tübingen, Germany