1 From the Department of Neurology (J.W.C.), Maryland Stroke Center, Baltimore VA Medical Center and University of Maryland School of Medicine; and the School of Public Health (J.H.C.), University of California, Berkeley. jcole@som.umaryland.edu.
2 From the Department of Neurology (J.W.C.), Maryland Stroke Center, Baltimore VA Medical Center and University of Maryland School of Medicine; and the School of Public Health (J.H.C.), University of California, Berkeley.