1. 3rd Medical Department with Cardiology and Intensive Care Medicine, Klinik Ottakring (Wilhelminenhospital), A-1160 Vienna, Austria
2. Faculty of Medicine, Sigmund Freud University, A-1020 Vienna, Austria
3. Ludwig Boltzmann Institute for Cardiovascular Research, A-1090 Vienna, Austria
4. Core Facilities, Medical University of Vienna, A-1090 Vienna, Austria
5. Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria