[1] Univ Oxford, Weatherall Inst Mol Med, Neurosci Grp, Oxford, England
[2] Univ Oxford, Dept Clin Neurol, Oxford, England
[3] Univ Munich, Inst Clin Neuroimmunol, Munich, Germany
[4] Univ Pavia, IRCCS, Fdn Neurol Inst C Mondino, I-27100 Pavia, Italy