1. Department of Surgery for Congenital Heart Defects; Heart and Diabetes Centre NRW; Bad Oeynhausen Germany
2. Department of Paediatric Cardiology and Congenital Heart Defects; Heart and Diabetes Centre NRW; Bad Oeynhausen Germany
3. Department of Thoracic and Cardiac Surgery; Heart and Diabetes Centre NRW; Bad Oeynhausen Germany