1. Department of Cardiology University Heart and Vascular Center Hamburg Hamburg Germany
2. DZHK (German Centre for Cardiovascular Research), partner site Hamburg/Kiel/Lübeck Berlin Germany
3. Department of Cardiology German Heart Centre Munich Munich Germany
4. Department of Cardiovascular Surgery University Heart and Vascular Center Hamburg Hamburg Germany
5. DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance Munich Germany