1. Cardiac Electrophysiology Section, Division of Cardiology, Department of Medicine University of California, San Diego San Diego California USA
2. Interventional Electrophysiology Scripps Clinic and Prebys Cardiovascular Institute La Jolla California USA
3. Premier Cardiology Newport Beach California USA
4. Pacific Heart Institute Santa Monica California USA
5. Heart Rhythm Center Santa Barbara California USA
6. Biosense Webster Inc. Irwindale California USA
7. Texas Cardiac Arrhythmia Research Austin Texas USA
8. MetroHealth Medical Center Case Western Reserve University School of Medicine Cleveland Ohio USA