1. National Institute of Neurological Disorders and Stroke (K.P.), National Institutes of Health, Bethesda, MD.
2. Division for Heart Disease and Stroke Prevention, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA (A.M.T.-P., F.L., Y.H).
3. National Heart, Lung, and Blood Institute (W.B., S.S.), National Institutes of Health, Bethesda, MD.
4. Office of Disease Prevention and Health Promotion, Office of the Assistant Secretary for Health, US Department of Health and Human Services, Rockville, MD (E.O.).