1. From the Clinical Neurocardiology Section, Clinical Neurosciences Program, Division of Intramural Research, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Md (D.S.G., Y.S.); and Hypertension Unit, Sheba Medical Center, Tel-HaShomer, and Sackler Faculty of Medicine, Tel Aviv, Israel (Y.S.).