1. Interventional Radiology University Hospitals Leuven Leuven Belgium
2. Department of Paediatric and Congenital Cardiology University Hospitals Leuven Leuven Belgium
3. Paediatric Cardiology University Hospital Maastricht Maastricht the Netherlands
4. Paediatric Cardiology MC3 Necker Hospital for Sick Children Paris France
5. Paediatric Cardiology University of the Free State Bloemfontein South Africa