1. Department of Internal Medicine Texas Tech University Health Sciences Center Amarillo Texas USA
2. Department of Internal Medicine Yale University New Haven Connecticut USA
3. Department of Cardiology Saint Joseph Hospital CHI Commonspirit Lexington Kentucky USA
4. Department of Cardiology University of Florida – Jacksonville Jacksonville Florida USA
5. Saha Cardiovascular Research Center University of Kentucky College of Medicine Lexington Kentucky USA
6. Gill Heart Institute University of Kentucky Lexington Kentucky USA
7. Department of Cardiology Montefiore Medical Center Bronx New York USA
8. Texas Cardiac Arrhythmia Institute St. David's Medical Center Austin Texas USA