1. Department of Internal Medicine II; University Medical Center Regensburg; Franz-Josef-Strauß-Allee 11 93053 Regensburg Germany
2. Leibniz Research Centre for Working Environment and Human Factors; University of Dortmund; Dortmund Germany
3. Laboratory of Myocardial Electrophysiology, Imperial Centre for Translational and Experimental Medicine; Imperial College London; London UK
4. Department of Cardiothoracic Surgery; University Medical Center Regensburg; Franz-Josef-Strauß-Allee 11 93053 Regensburg Germany
5. Department of Anesthesiology; University Medical Center Regensburg; Franz-Josef-Strauß-Allee 11 93053 Regensburg Germany
6. Clinic for Cardiology and Pneumology; University Medical Center Göttingen; Göttingen Germany
7. Department of Physiology; University of Regensburg; Regensburg Germany