Todd A Hardy1, John R Corboy2, Brian G Weinshenker2. 1. From the Brain & Mind Centre (T.A.H.), University of Sydney; Neuroimmunology Clinic (T.A.H.), Concord Repatriation General Hospital, Sydney, Australia; University of Colorado School of Medicine (J.R.C.); Rocky Mountain MS Centre at University of Colorado (J.R.C.), Aurora; and Mayo Clinic (B.G.W.), Rochester, MN. thardy@med.usyd.edu.au. 2. From the Brain & Mind Centre (T.A.H.), University of Sydney; Neuroimmunology Clinic (T.A.H.), Concord Repatriation General Hospital, Sydney, Australia; University of Colorado School of Medicine (J.R.C.); Rocky Mountain MS Centre at University of Colorado (J.R.C.), Aurora; and Mayo Clinic (B.G.W.), Rochester, MN.