1. From the Departments of Neurology (S.S., D.R.L., E.K., J.S.), Dental Ecology (J.B.), Epidemiology (W.R.), UNC Stroke Program University of North Carolina, Chapel Hill, NC; the Department of Neurology (J.K.), Wake Forest University, Winston-Salem, NC; and the Department of Cardiovascular Science (W.A.T.), Brody School of Medicine, East Carolina University, Greenville, NC.