1. Department of Cardiology I – Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Muenster, Cardiol, Muenster, Germany
2. Essen, Germany
3. Department of Angiology, Sankt-Gertrauden Hospital, Academic Teaching Hospital of Charité University, Berlin, Germany
4. Practice for Vascular Medicine Gefäßpraxis im Tal, Munich, Germany
5. Department of Cardiovascular Medicine, Marienhospital Bruehl, Bruehl, Germany
6. Cardiovascular Center Oberallgaeu-Kempten, Academic Teaching Hospital, University of Ulm, Allgaeu Hospital Group, Immenstadt, Germany
7. Outpatient Centre for Heart and Vascular Diseases East Brandenburg, Frankfurt/Oder, Germany
8. Department of Angiology/Cardiac Center Elberfeld, Agaplesion Bethesda Hospital Wuppertal, Wuppertal, Germany
9. Department of Angiology, Königin Elisabeth Hospital, Academic Teaching Hospital of Charité, Berlin, Germany
10. Practice for Cardiovascular Diseases and Academy for Vascular Diseases, Ettlingen, Germany
11. Department of Angiology, Medical Clinic 2, Municipal Hospital of Dresden, Dresden, Germany
12. Vascular Center, Arnsberg Clinic, Arnsberg, Germany
13. Division of Vascular Medicine, Medical Clinic and Policlinic IV, University Hospital Munich, Munich, Germany