1 Center for Stroke Research Berlin, Charité-Universitätsmedizin Berlin, Berlin, Germany; Klinik und Hochschulambulanz für Neurologie, Charité-Universitätsmedizin Berlin, Berlin, Germany.
2 University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland.
3 University Heart Center, Department of Cardiology, University Hospital Zurich, Zurich, Switzerland. Electronic address: christian.templin@usz.ch.