James L Bernat1, Michael Swash2. 1. From the Departments of Neurology and Medicine (J.L.B.), Geisel School of Medicine at Dartmouth, Hanover, NH; and Department of Neurology (M.S.), Barts and the London School of Medicine at the Royal London Hospital, London, UK. james.l.bernat@dartmouth.edu. 2. From the Departments of Neurology and Medicine (J.L.B.), Geisel School of Medicine at Dartmouth, Hanover, NH; and Department of Neurology (M.S.), Barts and the London School of Medicine at the Royal London Hospital, London, UK.