1. Department of Cardiology III - Adult Congenital and Valvular Heart Disease, University Hospital Muenster, Albert‑Schweitzer‑Campus 1, Muenster, Germany
2. Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension, Royal Brompton and Harefield Nhs Foundation Trust, Nhli, Imperial College, London, UK
3. National Register for Congenital Heart Defects, Berlin, Germany