1. Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension, Royal Brompton & Harefield Hospitals, Guys & St Thomas’s NHS Trust and National Heart and Lung Institute, Imperial College , Sydney Street, London SW3 6NP , UK
2. Department of Medical Rehabilitation, Medical Faculty, University of Rijeka , Croatia
3. Department of Medical and Surgical Sciences, ‘Magna Graecia’ University , Catanzaro , Italy
4. Congenital and Pediatric Cardiology, Adult Congenital Heart Disease Unit, Hôpital Européen Georges Pompidou , Paris , France
5. Adult Congenital Heart Disease Unit, Hôpital Européen Georges Pompidou, Assistance Publique des Hôpitaux de Paris, Paris Cité University , Paris , France
6. Unitat de Cardiopaties Congènites de l'Adolescent i de l'Adult (UCCAA); CIBERCV, European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Vall d'Hebron Hospital , Barcelona , Spain
7. Adult Congenital Heart Disease Unit, AORN dei Colli—Monaldi Hospital , Naples , Italy
8. Structural Interventional Cardiology, Department of Clinical & Experimental Medicine, Careggi University Hospital , Florence , Italy
9. Department of Cardiology, Erasmus Medical Centre , Rotterdam , Netherlands
10. Centre for Research and Innovation in Care, Faculty of Nursing, University of Antwerp , Antwerp , Belgium
11. Department of Cardiology III—Adult Congenital and Valvular Heart Disease, University Hospital Muenster , Muenster , Germany