1. Department of Cardiology, Angiology and Pneumology Heidelberg University Hospital Im Neuenheimer Feld 410 Heidelberg 69120 Germany
2. Heidelberg Center for Heart Rhythm Disorders (HCR) Heidelberg University Hospital Heidelberg Germany
3. German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim Heidelberg Germany
4. Institute for Medical Biometry and Informatics University of Heidelberg Heidelberg Germany
5. Department of Cardiac Surgery Heidelberg University Hospital Heidelberg Germany