1. Department of Cardiology; Erasmus MC, Thoraxcenter; Department of Cardiology Ba583a, PO Box 2040 3000 CA Rotterdam the Netherlands
2. Department of Epidemiology; Erasmus MC; Rotterdam the Netherlands
3. Department of Obstetrics, Imperial College School of Medicine; Chelsea and Westminster Hospital; London UK
4. Adult Congenital Heart Disease Unit, Department of Cardiology; Queen Elizabeth Hospital; Birmingham UK
5. Department of Cardiology; Royal Brisbane and Women's Hospital; Brisbane Australia
6. Department of Cardiology; Hospital Universitario 12 de Octubre; Madrid Spain
7. Department of Cardiac and Vascular Diseases; Jagiellonian University School of Medicine; John Paul II Hospital Kraków Poland
8. Almazov Federal North-West Medical Research Centre; Saint Petersburg Russia
9. Department of Cardiology, Kasr El Aini Hospital, Faculty of Medicine; Cairo University; Egypt
10. Department of Cardiology, Faculty of Medicine; El Minya University Hospital; Minya Egypt
11. ANMCO Research Centre; Florence Italy
12. ESC; Sophia Antipolis Cedex; France
13. Department of Cardiology, Norwich Medical School; University of East Anglia; Norwich UK