1. Center of Congenital Heart Disease, Heart and Diabetes Center Northrhine-Westfalia, Ruhr-University of Bochum, Bad Oeynhausen, Germany
2. Division of Pediatric Cardiology, Department of Pediatrics III, Medical University of Innsbruck, Innsbruck, Tirol, Austria
3. University Heart Center Freiburg - Bad Krozingen, Department of Congenital Heart Disease and Pediatric Cardiology, Medical Center - University of Freiburg, Faculty of Medicine, Freiburg, Germany
4. Department of Paediatric Cardiology and Congenital Heart Disease, German Heart Centre, Munich, Germany
5. Department of Pediatric Cardiology, University Hospital of Giessen and Marburg Campus Giessen, Giessen, Hessen, Germany
6. Department of Pediatric Cardiology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Bavaria, Germany