1. Institute of Biomaterial Science and Berlin-Brandenburg Centre for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
2. Department of Cardiology/Angiology, Asklepios Clinic Hamburg, Hamburg, Germany
3. Zentrum für Gefäßmedizin, Klinikum Friedrichshain, Berlin, Germany
4. Department of Dermatology, Ernst-Moritz-Arndt-University, Greifswald, Germany
5. Zentrum für Gefäßkrankheiten, Zürich, Schweiz
6. Department of Physiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
7. Praxisklinik Herz – Gefäße, Dresden, Germany
8. Department of Biomaterials, University of Ulm, Ulm, Germany
9. Department of Internal Medicine, University of Siena, Siena, Italy
10. Department of Angiology, Johann-Wolfgang Goethe University, Frankfurt, Germany