1. From the University of Pittsburgh School of Medicine, Pittsburgh (R.A., C.O.), and Penn Neuroscience Center–Neurology, Hospital of the University of Pennsylvania, Philadelphia (C.K.) — both in Pennsylvania; the University of California, Los Angeles, Los Angeles (C.C.-S.), and the Department of Neurology, University of California, Irvine, Irvine (N.A.G.); the Friedrich-Baur Institute, Department of Neurology (J.S.), and the Department of Dermatology and Allergy, University Hospital (M.S.), Ludwig...