1. Department of Electrophysiology; Heart Center Leipzig at University of Leipzig; Leipzig Germany
2. Cardiology Clinic, Clinical Center of Serbia; School of Medicine, Belgrade University; Belgrade Serbia
3. Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart and Chest Hospital, Liverpool, United Kingdom; and Aalborg Thrombosis Research Unit, Department of Clinical Medicine; Aalborg University; Aalborg Denmark
4. Institute for Medical Informatics, Statistics, and Epidemiology; University of Leipzig; Leipzig Germany