1. Faculty of Medical Sciences, Private University in the Principality of Liechtenstein (UFL), 9495 Triesen, Liechtenstein
2. Vorarlberg Institute for Vascular Investigation & Treatment (VIVIT), 6800 Feldkirch, Austria
3. Department of Internal Medicine I, Academic Teaching Hospital Feldkirch, 6800 Feldkirch, Austria
4. Medical Central Laboratories, 6800 Feldkirch, Austria
5. Landeskrankenhaus-Betriebsgesellschaft, Academic Teaching Hospital Feldkirch, 6800 Feldkirch, Austria
6. Drexel University College of Medicine, Philadelphia, PA 19129, USA