KENNETH A. ELLENBOGEN, MD, Kimmerling Professor of Cardiology and Chairman of the Division of Cardiology, VCU / Pauley Heart Center, and Director of Clinical Cardiac Electrophysiology and Pacing, Medical College of Virginia / VCU School of Medicine, Richmond, VA, USA.

KAROLY KASZALA, MD, PHD, Associate Professor of Medicine, VCU / Pauley Heart Center, Medical College of Virginia / VCU School of Medicine, and Director of Electrophysiology, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA.