David H. Miller, M.D., F.R.C.P., F.R.A.C.P.
Professor, Department of Clinical Neurology, Institute of Neurology, London; Consultant Neurologist, The National Hospital for Neurology and Neurosurgery, London.
Eric C. Raps, M.D.
William N. Kelley Associate Professor of Neurology and Director, Division of Stroke and Neurointensive Care, University of Pennsylvania Medical Center, Philadelphia.