1. From Department of Research and Evaluation (J.F.Y., W.C.), Kaiser Permanente Medical Center, Pasadena, Calif; Center for Interventional Therapeutics (CIVT) (S.S.B.), Columbia University Medical Center, New York, NY; Department of Cardiology (A.Y.-J.S., M.B.J.), Department of Electrophysiology (M.B.J., X.W.), Kaiser Permanente Medical Center, Los Angeles, Calif.