1. Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts (S.P.J., J.L.C., K.J.M.)
2. Vanderbilt University Medical Center, Nashville, Tennessee (J.H.)
3. Healthcare Associates, Beth Israel-Lahey Health System, Boston, Massachusetts (A.I.)
4. Countway Library, Harvard University, Boston, Massachusetts (C.M.)
5. Beth Israel Deaconess Medical Center, Hebrew SeniorLife, Hinda and Arthur Marcus Institute for Aging Research, and Harvard Medical School, Boston, Massachusetts (L.A.L.)
6. Johns Hopkins University, Baltimore, Maryland (L.J.A., E.R.M.)
7. Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom (N.S.B.)
8. Diabetes Trials Unit, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom (R.L.C., R.R.H.)
9. University of Tennessee Health Science Center, Memphis, Tennessee (W.C.C.)
10. Coordinating Center for Clinical Trials, The University of Texas School of Public Health, Houston, Texas (B.R.D.)
11. School of Public Health, University of Minnesota, Minneapolis, Minnesota (G.G.)
12. University of New South Wales, Sydney, and Neuroscience Research Australia, Randwick, New South Wales, Australia (R.P.)
13. Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, University of Leuven, Leuven, and NPA Alliance for the Promotion of Preventive Medicine (APPREMED), Mechelen, Belgium (J.A.S.)
14. Michael E. DeBakey VA Medical Center and Baylor College of Medicine, Houston, Texas (A.A.T.)
15. Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, University of Leuven, Leuven, Belgium (L.T.)
16. Case Western Reserve University, University Hospitals Cleveland Medical Center, Cleveland, Ohio (J.T.W.)