1. Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge , SE-141 86 Stockholm , Sweden
2. Politecnico di Milano, Electronic, Information and Biomedical Engineering Department , Milan , Italy
3. Istituto Auxologico Italiano IRCCS , Milan , Italy
4. Department of Clinical and Experimental Information processing (Digital Cardiology), Erasmus Medical Center, Thoraxcenter , Rotterdam , The Netherlands
5. Research Group Cardiovascular Diseases, University of Antwerp , 2000 Antwerp , Belgium
6. Department of Cardiology, Antwerp University Hospital , 2056 Edegem , Belgium
7. Faculty of Medicine and Life Sciences, Hasselt University , 3500 Hasselt , Belgium
8. Department of Cardiology, Heart Centre Hasselt , Jessa Hospital, 3500 Hasselt , Belgium
9. Division of Cardiology, Veterans Affairs Greater Los Angeles Healthcare System , Los Angeles, CA 90073 , USA
10. Cardiac Arrhythmia Center, University of California Los Angeles , Los Angeles, CA , USA
11. Cardiology Division, Cardiovascular Institute and Institute for Computational and Mathematical Engineering, Stanford University , Stanford, CA , USA
12. Department of Cardiology, KU Leuven , 3000 Leuven , Belgium
13. Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital , 5005 Adelaide , Australia
14. Hannover Heart Rhythm Center, Department of Cardiology and Angiology, Hannover Medical School , Hannover , Germany