1 From the Departments of Neurology (S.P., P.G., S.J., F.D.R., J.T.S.) and Radiology (F.D.R.), University of Kentucky; and VA Medical Center (J.T.S.), Lexington, KY.
2 From the Departments of Neurology (S.P., P.G., S.J., F.D.R., J.T.S.) and Radiology (F.D.R.), University of Kentucky; and VA Medical Center (J.T.S.), Lexington, KY. parneetgrewal298@yahoo.com.