1. University Hospital Cologne Cologne Germany
2. University Medical Center UKSH Lübeck Germany
3. University Hospital Tübingen Tübingen Germany
4. Justus Liebig University Giessen Campus Kerckhoff Bad Nauheim Germany
5. University Hospital Heidelberg Heidelberg Germany
6. Asklepios Klinik Altona Hamburg Germany
7. Charité, Universitätsmedizin Berlin Berlin Germany
8. University Medical Center Ulm Ulm Germany
9. University Hospital Würzburg Würzburg Germany
10. Johanniter‐Krankenhaus im Fläming Treuenbrietzen Treuenbrietzen Germany
11. Krankenhaus St. Josef Wuppertal Germany
12. University Hospital Carl Gustav Carus Dresden Germany
13. St. Josef Hospital Bochum Bochum Germany
14. Helios St. Elisabeth Klinik Oberhausen Oberhausen Germany
15. University Hospital Munster Munster Germany
16. Immanuel Krankenhaus Berlin‐Buch Berlin Germany
17. Medical University of Graz Graz Austria
18. Helios University Hospital Wuppertal Wuppertal Germany
19. University Hospital Erlangen Erlangen Germany
20. University of Cologne Cologne Germany