1. Division of Cardiology, Department of Medicine, University of California, San Diego, La Jolla
2. Section of Cardiovascular Medicine, Yale University School of Medicine, New Haven, Connecticut
3. Center for Outcomes Research and Evaluation, Yale–New Haven Hospital, New Haven, Connecticut
4. Division of Cardiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
5. Section of Cardiovascular Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
6. Duke Clinical Research Institute, Duke University Medical Center, Durham, North Carolina
7. Cardiac Electrophysiology and Arrhythmia Services, Cooper Medical School of Rowan University, Camden, New Jersey
8. Department of Health Administration and Policy, University of New Haven, West Haven, Connecticut