1. Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension Biomedical Research Unit National Heart and Lung Institute Royal Brompton Hospital Imperial College London United Kingdom
2. Division of Adult Congenital and Valvular Heart Disease Department of Cardiovascular Medicine University Hospital Muenster Muenster Germany
3. Boston Adult Congenital Heart (BACH) and Pulmonary Hypertension Group Boston Children's Hospital and Brigham and Women's Hospital Harvard Medical School Boston MA
4. Department of Cardiology Monaldi di Hospital ‐ Second University of Naples Italy
5. Beijing Anzhen Hospital Capital Medical University Beijing China
6. First Department of Cardiology AHEPA University Hospital Aristotle University of Thessaloniki Greece
7. Congenital and Structural Cardiology University Hospitals Leuven Leuven Belgium
8. Department of Cardiovascular Sciences Catholic University Leuven Leuven Belgium
9. Knight Cardiovascular Institute Oregon Health and Science University Portland OR
10. Heart Institute Cincinnati Children's Hospital Medical Center Cincinnati OH
11. Paediatric Cardiology Unit University Hospital of Geneva Switzerland
12. Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique University of Lausanne Geneva Switzerland