1. Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee
2. Department of Medicine, Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
3. Department of Cardiology, Boston VA Healthcare System, West Roxbury, Massachusetts
4. Department of Biostatistics, Vanderbilt University, Nashville, Tennessee
5. Vanderbilt Center for Translational and Clinical Cardiovascular Research, Vanderbilt University School of Medicine, Nashville, Tennessee
6. Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee
7. Vascular Research Laboratory, Providence VA Medical Center, Providence, Rhode Island
8. Division of Cardiovascular Medicine, Department of Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island