1. From the Center for Multiple Sclerosis and Autoimmune Neurology (A.A., N.V., Y.G., S.H., A.Z., J.J.C., D.D.), Department of Neurology; Department of Laboratory Medicine and Pathology (N.V., Y.G., A.Z., D.D.); Department of Neurology (N.V.), Mayo Clinic College of Medicine, Rochester, MN; Division of Neurology (M.V.P.), Department of Medicine, Faculty of Medicine, Khon Kaen University, Thailand; and Department of Ophthalmology (J.J.C.), Mayo Clinic College of Medicine, Rochester, MN.