1. Department of Vascular Surgery and Phlebology, CONTILIA Group – Heart and Vascular Center, Essen, Germany
2. Abteilung für Innere Medizin und Gastroenterologie, Elisabeth-Krankenhaus Essen Klinik fur Innere Medizin und Gastroenterologie, Essen, Germany
3. Klinik für Innere Medizin und Gastroenterologie, Elisabeth-Krankenhaus Essen Klinik fur Innere Medizin und Gastroenterologie, Essen, Germany
4. Department of Vascular Surgery, Klinikum Oberberg GmbH, Gummersbach, Germany
5. Department of Angiology, Contilia Group – Heart and Vascular Center, Essen, Germany
6. Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
7. Department of Emergency Medicine, McMaster University, Hamilton, Canada
8. Department of Surgery, Städtisches Klinikum Solingen, Solingen, Germany
9. Department of Vascular and Endovascular Surgery, LMU University Hospital, Munich, Germany
10. Department of Vascular Surgery and Phlebology, CONTILIA Group - Heart and Vascular Center, Essen, Germany