[1
]Brigham and Women’s Hospital Heart & Vascular Center, Harvard Medical School,
Boston, MA (R.K.W., D.L.B.)
[2
]Division of Cardiology, Richard and Susan Smith Center for Outcomes Research in Cardiology,
Beth Israel Deaconess Medical and Harvard Medical School, Boston, MA (R.K.W.)
[3
]Division of Cardiology, Washington University School of Medicine, Saint Louis, MO
(K.E.J.M.)
[4
]The Ahmanson-UCLA (University of California, Los Angeles) Cardiomyopathy Center, Ronald
Reagan UCLA Medical Center (G.C.F.)
[5
]Duke Clinical Research Institute, Durham, NC (X.Z., A.D.D., R.A.M., A.F.H.)
[6
]Division of Cardiology, Stanford University, Palo Alto, CA (P.A.H.)
[7
]Department of Biostatistics and Bioinformatics, Duke University, Durham, NC (R.A.M.)
[8
]Division of Cardiology, Feinberg School of Medicine, Northwestern University, Chicago,
IL (C.W.Y.).