1. Department of Internal Medicine IIUniversity Hospital Regensburg Regensburg Germany
2. Department of CardiologyLudwig‐Maximilians‐University Munich Munich Germany
3. Kliniken an der Paar Aichach Germany
4. Division of Cardiovascular Medicine, Department of MedicineBrigham and Women's Hospital, Harvard Medical School Boston MA USA
5. Institute for Medical Engineering and ScienceMassachusetts Institute of Technology Cambridge MA USA