1 From the Department of Neurology (T.L.V.), Rocky Mountain MS Center at Anschutz Medical Campus, University of Colorado School of Medicine, Aurora; and the Department of Neurology (M.M.), Miller School of Medicine, University of Miami, FL. timothy.vollmer@ucdenver.edu.
2 From the Department of Neurology (T.L.V.), Rocky Mountain MS Center at Anschutz Medical Campus, University of Colorado School of Medicine, Aurora; and the Department of Neurology (M.M.), Miller School of Medicine, University of Miami, FL.