1. Heart Rhythm Center (M.C., A.G., R.S., V.C., M.B., G.V., C.T.), Centro Cardiologico Monzino IRCCS, Milano.
2. Cardiology and Arrhythmology Clinic, Department of Clinical, Special and Dental Sciences (M.C.), University Hospital “Umberto I-Lancisi-Salesi”, Marche Polytechnic University, Ancona, Italy.
3. Cardiology and Arrhythmology Clinic, Department of Biomedical Sciences and Public Health (A.G., A.D.R.), University Hospital “Umberto I-Lancisi-Salesi”, Marche Polytechnic University, Ancona, Italy.
4. University Heart Center, University Hospital Zurich, Switzerland (A.G., A.M.S., F.D.).
5. Dipartimento di Imaging Cardiovascolare (E.C., D.A.), Centro Cardiologico Monzino IRCCS, Milano.
6. Unit of Vascular Biology and Regenerative Medicine (E.S., G.P.), Centro Cardiologico Monzino IRCCS, Milano.
7. Cardiovascular Pathology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, Azienda Ospedaliera-University of Padua, Padova (S.R., G.T., C.B.).
8. Department of Clinical Sciences and Community Health, University of Milan, Italy (G.P., D.A., C.T.).
9. Texas Cardiac Arrhythmia Institute, St. David’s Hospital, Austin (A.N.).