1. Department of Congenital Heart Disease—Pediatric Cardiology, Deutsches Herzzentrum der Charité, Augustenburger Platz 1, 13353 Berlin, Germany
2. Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
3. Competence Network for Congenital Heart Defects, 13353 Berlin, Germany
4. Department of Internal Medicine I, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany
5. Department of Pediatric Cardiology, Saarland University Medical Center, 66421 Homburg, Germany
6. National Register for Congenital Heart Defects, 13353 Berlin, Germany