1. From the Washington Hospital Center Stroke Center (A.W.H.), Washington, DC; the Department of Neurology (A.W.H., N.C.B., R.C., S.L., A.W., S.S.K., C.S.K.), Georgetown University, Washington, DC; the Departments of Kinesiology and Neurology (D.F.E.), University of Wisconsin, Madison, WI; the University of Michigan (L.B.M., J.J.W., B.N.S.), Ann Arbor, MI; the Department of Neurology (S.F., A.J.-T.), Howard University, Washington, DC; Johns Hopkins University Urban Health Institute (M.C.G.), Baltimore,...