1 From the Department of Neurology (J.L.B.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; and the Department of Neurology (D.L.), Ochsner Medical Center, New Orleans, LA. bernat@dartmouth.edu.
2 From the Department of Neurology (J.L.B.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; and the Department of Neurology (D.L.), Ochsner Medical Center, New Orleans, LA.