1. Hypertrophic Cardiomyopathy Center and Research Institute, Division of Cardiology, Tufts Medical Center, Boston, Massachusetts
2. Predictive Analytics and Comparative Effectiveness Center, Institute for Clinical Research and Health Policy Studies, Division of Cardiology, Tufts Medical Center, Boston, Massachusetts
3. Division of Cardiology, Department of Internal Medicine, University of Texas, Dallas
4. Southwestern Medical Center, Dallas, Texas