DANIEL R. FRISCH, MD and ARNOLD J. GREENSPON, MD

Division of Cardiology, Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, PA

Ulrika Birgersdotter-Green, MD, FACC, FHRS
Professor of Medicine
Director of Pacemaker and ICD Clinic
University of California -San Diego
San Diego, CA

¹University of Texas Southwestern Medical Center, Dallas, TX
²Dallas VA Medical Center, Dallas, TX

GEORGE SYROS, MD, and MICHAEL V. ORLOV, MD, PhD

Steward St. Elizabeth Medical Center, Tufts University Medical School, Boston, MA

CHIRAG R. BARBHAIYA, MD, RANDY M. SEEWALD, MD and SAM HANON, MD, FHRS

Beth Israel Medical Center, University Hospital and Manhattan Campus for the Albert Einstein College of Medicine, New York, NY

MARC W. DEYELL, MD, MSc and DAVID J. CALLANS, MD

Hospital of the University of Pennsylvania, Philadelphia, PA