1. Division of Research Kaiser Permanente Northern California Oakland CA
2. Departments of Epidemiology, Biostatistics and Medicine University of California, San Francisco CA
3. Department of Health Research and Policy Stanford University Stanford CA
4. Department of Medicine (Cardiovascular Medicine) Stanford University Stanford CA
5. Department of Cardiac Electrophysiology Kaiser Permanente Santa Clara Medical Center Santa Clara CA
6. Department of Cardiology Kaiser Permanente Oakland Medical Center Oakland CA