1. Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
2. Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3. Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT), Feldkirch, Austria
4. Private University of the Principality of Liechtenstein, Triesen, Liechtenstein
5. Drexel University College of Medicine, Philadelphia, PA, USA