1. Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT)
2. Department of Medicine, Academic Teaching Hospital Feldkirch, Feldkirch
3. 3rd Department of Medicine, Cardiology and Emergency Medicine, Wilhelminenhospital, Vienna, Austria
4. Private University in the Principality of Liechtenstein, Triesen, Liechtenstein
5. Drexel University College of Medicine, Philadelphia, Pennsylvania, USA