1. Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna , Waehringer Guertel 18-20, 1090 Vienna , Austria
2. Duke Clinical Research Institute , 300 W Morgan Street, 27701 Durham, NC , USA
3. Research Group Cardiovascular Diseases, Department GENCOR, University of Antwerp , Prinsstraat 13, 2000 Antwerp , Belgium
4. Department of Cardiology, Antwerp University Hospital (UZA) , Drie Eikenstraat 655, 2650 Edegem , Belgium
5. Ludwig Boltzmann Institute for Cardiovascular Research , Waehringer Guertel 18-20, 1090 Vienna , Austria
6. Core Facilities, Medical University of Vienna , Waehringer Guertel 18-20, 1090 Vienna , Austria
7. 3rd Department of Internal Medicine, Cardiology and Intensive Care Unit, Wilhelminenhospital , Montleartstraße 37, 1160 Vienna , Austria
8. Medical School, Sigmund Freud University , Freudplatz 1, 1020 Vienna , Austria