1. Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN
2. Department of Cardiovascular Anesthesia and Critical Care, Baylor College of Medicine, Houston, TX
3. Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, SC
4. Division of Cardiology, Inova Heart and Vascular Institute, Inova Fairfax Medical Campus, Falls Church, VA
5. Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN
6. Department of Medicine, Department of Health Research Methods, Evidence, and Impact, Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
7. Department of Cardiovascular Medicine, University of Kansas Medical Center, Kansas City, KS