Program in Physical Therapy (C.E.L., J.M.W., A.W.D), Program in Occupational Therapy (C.E.L., D.F.E., A.W.D), Department of Neurology (C.E.L., D.F.E., A.W.D), Washington University School of Medicine, St. Louis, Missouri; National Rehabilitation Hospital (A.W.D), Washington, DC