1. Cardiology St. George's University Hospitals London UK
2. Department of Cardiology Ain Shams University Cairo Egypt
3. German Heart Centre Department of Cardiothoracic & Vascular Surgery Berlin Germany
4. German Centre of Cardiovascular Research (DZHK) partner site Berlin Berlin Germany
5. Steinbeis University Berlin Institute (STI) of Cardiovascular Perfusion Berlin Germany
6. University Hospital La Paz Madrid Spain
7. San Rafaele Hospital Milan Italy
8. Isala Hospital Zwolle The Netherlands
9. University Hospital Zurich Zurich Switzerland