1. Department of Cardiology and Pneumology, University Medical Center Göttingen, Robert-Koch-Str. 42a—Heart Research Building, 37075 Göttingen, Germany
2. Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
3. German Center for Cardiovascular Research, Partnersite Göttingen, Robert-Koch-Str. 42a, 37075 Göttingen, Germany