1. Regiomed Vascular Center and Department of Internal Medicine, REGIOMED-Hospital GmbH, Sonneberg, Germany
2. Department of Internal Medicine I, University Hospital Jena, Germany
3. School of Medicine, University of Split, Croatia
4. Center for Internal Medicine, Harz-Hospital Wernigerode, Germany
5. Department of Internal Medicine and Angiology, HELIOS-Hospital Salzgitter, Germany
6. Department of Cardiology and Angiology, GRN Hospital Weinheim, Germany
7. Department of Cardiology and Angiology, University Hospital Essen, Germany
8. Center for Cardiology, University Hospital Mainz, Germany
9. Vascular Practice im Tal, Munich, Germany
10. Department of Internal Medicine III, University Hospital Schleswig-Holstein, Kiel, Germany
11. Department of Angiology, St. Gertrauden Hospital, Berlin, Germany
12. Department of Cardiology I, University Hospital Münster, Germany
13. Department of Vascular Medicine, University Hospital Hamburg, Germany
14. Vascular Practice, Hannover, Germany
15. Department of Angiology, University Vascular Center East Bavaria, University Hospital Regensburg, Germany
16. Department of Clinical and Experimental Medicine, University of Surrey, Guildford, UK
17. Vascular Department, Surrey and Sussex Healthcare NHS Trust, Redhill, UK
18. Heart and Vascular Center, Allgäu Hospital gGmbH, Immenstadt, Germany