1. Hatter Institute for Cardiovascular Research in Africa & IDM, Department of Medicine, Faculty of Health Sciences; University of Cape Town; South Africa
2. Soweto Cardiovascular Research Unit; University of the Witwatersrand; Johannesburg South Africa
3. Inter-Cape Heart Group; Medical Research Council; South Africa
4. Department of Cardiology, Thoraxcentre; Erasmus Medical Centre; Rotterdam the Netherlands
5. Department of Cardiology; University Hospitals Leuven; Leuven Belgium
6. Adult Congenital Heart Disease Centre, The National Heart and Lung Institute, Imperial College London; Royal Brompton Hospital; London UK
7. Cardiovascular Department; Ospedali Riuniti and University of Trieste; Trieste Italy
8. Department of Cardiology; Mater Dei Hospital; Birkirkara Bypass Malta
9. Division of Cardiology, Hospital de Clinicas; University of Buenos Aires; Buenos Aires Argentina
10. Department of Cardiology, Thoraxcentrum Twente, Medisch Spectrum Twente; Enschede the Netherlands
11. Department of Obstetrics, Imperial College School of Medicine; Chelsea and Westminster Hospital; London UK
12. Cincinnati Adult Congenital Heart Disease Program; Cincinnati Children's Hospital Heart Institute; Cincinnati OH USA
13. Department of Cardiology, Norwich Medical School; University of East Anglia; Norwich UK
14. European Society of Cardiology; Sophia Antipolis Cedex France