1. Cardiology Division, Massachusetts General Hospital, Boston (G.D.L., L.P.C.).
2. Saint Luke’s Mid America Heart Institute, Kansas City, MO (K.G., M.E.N., S.L.W., T.K., M.N.K., A.J.S.).
3. University of Missouri-Kansas City School of Medicine (K.G., M.E.N., T.K., M.N.K., A.J.S.).
4. Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (B.A.B.).
5. Department of Internal Medicine, Sections on Cardiovascular Medicine and Geriatrics, Wake Forest University School of Medicine, Winston-Salem, NC (D.W.K.).
6. Department of Medicine and Bluhm Cardiovascular Institute, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL (S.J.S., S.S.K.).
7. Emory University, Atlanta, GA (G.U.).
8. First Coast Cardiovascular Institute, Jacksonville, FL (S.L.).
9. Johns Hopkins University School of Medicine, Baltimore, MD (K.S.).