1 Department of Cardiology, University Heart Center, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
2 Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Schlieren, Switzerland.
3 Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France.
4 Department of Physiology, University of Bern, Bern, Switzerland.