1 From the Department of Neurology & Neurological Sciences (T.G., C.A.G.), Stanford University School of Medicine, CA; and Department of Neurology (M.T.R.), Mayo Clinic, Jacksonville, FL.
2 From the Department of Neurology & Neurological Sciences (T.G., C.A.G.), Stanford University School of Medicine, CA; and Department of Neurology (M.T.R.), Mayo Clinic, Jacksonville, FL. carlgold@stanford.edu.