1. From the Texas Cardiac Arrhythmia Institute, St David’s Medical Center, Austin, TX (P.S., L.D.B., A.M., J.D.B., A.N.); the Department of Biomedical Engineering, University of Texas, Austin (L.D.B., A.N.); the Department of Cardiology, University of Foggia, Italy (P.S.,L.D.B.); Catholic University of the Sacred Heart, Rome, Italy (M.P., G.P., F.B., P.S.); Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, Milan, Italy (A.D.R., M.C., C.T.); and the Department of Cardiovascular Diseases,...