1. Division of CardiologyDuke University Medical CenterDurham North Carolina
2. Department of Clinical ScienceUniversity of Bergen and Haukeland University HospitalBergen Norway
3. Department of MedicineInstitut Universitaire De Cardiologie Et De Pneumologie De QuebecQuebec Canada
4. Division of CardiologyUniversity HospitalLondon Ontario Canada
5. Silicon Valley HospitalRedwood City California
6. Medizinische Klinik IIBG Universitätsklinikum BergmannsheilBochum Germany
7. Cardiology DepartmentUniversity Hospital of PisaPisa Italy
8. Baptist Heart SpecialistsPonte Vedra Beach Florida
9. Texas Cardiac Arrhythmia ResearchAustin Texas
10. Medtronic Inc.Mounds View Minnesota
11. Medtronic Bakken Research CenterMaastricht The Netherlands
12. Division of CardiologyVanderbilt University Heart and Vascular InstituteNashville Tennessee