1. Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM) Maastricht University Maastricht The Netherlands
2. Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM) Maastricht University Medical Centre+ Maastricht The Netherlands
3. Department of Medical Signals Institute of Scientific Instruments of the Czech Academy of Sciences Brno Czech Republic
4. Department of Cardiology, University of Groningen University Medical Center Groningen Groningen The Netherlands
5. Department of Cardiology University Medical Center Utrecht Utrecht The Netherlands
6. Department of Cardiology Radboud University Medical Centre Nijmegen The Netherlands