1. Cardiovascular Center Aalst, Aalst, Belgium
2. Department of Cardiology, Lausanne University Center Hospital, Lausanne, Switzerland
3. Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
4. University Heart Centre Graz, Medical University Graz, Graz, Austria
5. Department of Cardiology, Catharina Hospital, Eindhoven, the Netherlands
6. Stanford University Medical Center, Stanford, California
7. Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands