1 Division of Cardiology, Department of Medicine, Warren Alpert Medical School of Brown University and Lifespan Cardiovascular Institute, Providence, Rhode Island.
2 Division of Cardiovascular Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.
3 Division of Cardiovascular Medicine, Department of Medicine, McGovern Medical School, The University of Texas Health Science Center, Houston, Texas.
4 Northside Hospital Cardiovascular Institute, Atlanta, Georgia.