1. Malcom Randall VAMC and University of Florida College of Medicine, Gainesville, Florida (D.E.W.)
2. Division of Cardiology, Department of Medicine, University of Vermont Medical Center, Burlington, Vermont (F.K.K.)
3. Departments of Medicine (Cardiology) and Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York (K.K.P.)
4. Division of Cardiology, Department of Medicine, Brown University Alpert Medical School, Providence, Rhode Island (N.R.S.).