1. Department of Cardiology Thomas Jefferson University Philadelphia Pennsylvania USA
2. Department of Cardiology, Detroit Medical Center Heart Hospital Detroit Michigan USA
3. Department of Internal Medicine SUNY Downstate Medical Center Brooklyn New York USA
4. Department of Internal Medicine Rochester General Hospital Rochester New York USA
5. Department of Cardiology West Virginia University Morgantown West Virginia USA
6. Department of Cardiology The University of Tennessee Nashville Tennessee USA
7. Department of Cardiology London Health Science Centre Western University London Ontario Canada
8. Department of Cardiology University of Texas Southwestern Medical Center Dallas Texas USA
9. Department of Cardiology UT Health San Antonio San Antonio Texas USA