1. Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, Baltimore, MD (J.K.G., S.S.M., R.S.B., C.E.N.).
2. Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins University, Baltimore, MD (S.S.M., K.M., J.C., C.E.N.).
3. Johns Hopkins School of Medicine, Baltimore, MD (S.S.M., S.Z., K.M., C.E.N.).
4. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (S.S.M., K.M., C.E.N.).
5. Office of the Vice Provost, Research, and Section of Cardiology, Department of Medicine, Aga Khan University, Karachi, Pakistan (S.S.V.).
6. Section of Cardiovascular Research, Department of Medicine, Baylor College of Medicine, Houston, TX (S.S.V.).
7. The Texas Heart Institute, Houston, TX (S.S.V., C.M.B.).
8. Baylor College of Medicine, Houston, TX (R.C.H., E.B., C.M.B.). Department of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas Health Sciences Center at Houston.