1. From the Departments of Neurosurgery (A.V.A., J.X., Y.H., G.X., R.F.K.), University of Michigan, Ann Arbor and Department of Veterans Affairs, Neurology Service, VA Ann Arbor Healthcare System, MI.
2. Pathology (A.V.A., S.M.S.), University of Michigan, Ann Arbor and Department of Veterans Affairs, Neurology Service, VA Ann Arbor Healthcare System, MI.
3. Neurology (M.M.W.), University of Michigan, Ann Arbor and Department of Veterans Affairs, Neurology Service, VA Ann Arbor Healthcare System, MI.
4. Molecular and Integrative Physiology (M.M.W., R.F.K.), University of Michigan, Ann Arbor and Department of Veterans Affairs, Neurology Service, VA Ann Arbor Healthcare System, MI.