1. Department of Cardiology Tulane University School of Medicine New Orleans Louisiana USA
2. University of Utah Salt Lake City Utah USA
3. Department of Cardiology Massachusetts General Hospital Boston Massachusetts USA
4. Department of Cardiology Johns Hopkins Medicine Baltimore Maryland USA
5. Department of Cardiology Hospital of the University of Pennsylvania Philadelphia Pennsylvania USA
6. Department of Cardiology Loyola University Medical Center Chicago Illinois USA
7. Department of Cardiology Leipzig University Leipzig Germany
8. Department of Cardiology Klinikum Coburg Coburg Germany
9. Department of Cardiology Segalen University Bordeaux France
10. Department of Cardiology, Centre for Heart Rhythm Disorders, Royal Adelaide Hospital University of Adelaide Adelaide Australia
11. Department of Cardiology Leiden University Medical Center Leiden The Netherlands
12. Department of Cardiology Cleveland Clinic Cleveland Ohio USA
13. Department of Cardiology University of Washington Medical Center Seattle Washington USA