1. Duke Clinical Research Institute, Department of Medicine, Duke University Medical Center, Durham, North Carolina3Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
2. Duke Clinical Research Institute, Department of Medicine, Duke University Medical Center, Durham, North Carolina
3. Ahmanson-UCLA Cardiomyopathy Center, Ronald Reagan-UCLA Medical Center, Los Angeles, California
4. Duke Clinical Research Institute, Department of Medicine, Duke University Medical Center, Durham, North Carolina2Center for Clinical and Genetic Economics, Department of Medicine, Duke University Medical Center, Durham, North Carolina4Division of General
5. Stanford University, Palo Alto Veteran’s Health Care System, Palo Alto, California
6. Duke Clinical Research Institute, Department of Medicine, Duke University Medical Center, Durham, North Carolina2Center for Clinical and Genetic Economics, Department of Medicine, Duke University Medical Center, Durham, North Carolina7Mayo Clinic, Rochest