1. Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA (S.D.).
2. Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology (B.J.C., S.C., C.S., E.A.S.), Beth Israel Deaconess Medical Center, Boston, MA.
3. Division of Cardiology (B.J.C., E.A.S.), Beth Israel Deaconess Medical Center, Boston, MA.
4. Harvard Medical School, Boston, MA (S.D., B.J.C., C.S., E.A.S.).
5. CPC Clinical Research, Aurora, CO (M.P.B.).
6. Division of Cardiology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora (M.P.B.).