1 From Georgetown University (J.G.M.), Washington, DC; University of Virginia Health System (B.B.W.), Charlottesville; American Academy of Neurology (P.K.B.), Minneapolis, MN; and Institute of Neurology (O.C.), UCL, London, UK. [email protected].
2 From Georgetown University (J.G.M.), Washington, DC; University of Virginia Health System (B.B.W.), Charlottesville; American Academy of Neurology (P.K.B.), Minneapolis, MN; and Institute of Neurology (O.C.), UCL, London, UK.