1. Division of Cardiology, Department of Internal Medicine UT Southwestern Medical Center Dallas TX USA
2. Division of Cardiology, Department of Medicine Emory University School of Medicine Atlanta GA USA
3. American Heart Association Dallas TX USA
4. Duke Clinical Research Institute Durham NC USA
5. Division of Cardiology Duke University School of Medicine Durham NC USA
6. Division of Cardiology, Feinberg School of Medicine Northwestern University Chicago IL USA
7. Ahmanson‐UCLA Cardiomyopathy Center University of California Los Angeles CA USA