1. Department of Internal Medicine II; Medical University of Vienna; Vienna Austria
2. Department of Internal Medicine I - Cardiology; Linz General Hospital; Johannes Kepler University School of Medicine; Linz Austria
3. Department of Internal Medicine II; University of Bratislava; Bratislava Slovakia
4. Krankenanstalten Dr. Dostal; Vienna Austria
5. Ludwig Boltzmann Cluster for Cardiovascular Research; Vienna Austria
6. Core Facilities; Medical University of Vienna; Vienna Austria
7. Third Medical Department; Cardiology and Intensive Care Medicine; Wilhelminenhospital; Vienna Austria