[1] Queen Mary Univ London, Blizard Inst, Barts & London Sch Med & Dent, London, England
[2] Univ Vita Salute San Raffaele, Osped San Raffaele, Dept Neurol, Milan, Italy
[3] Univ Vita Salute San Raffaele, Osped San Raffaele, Inst Expt Neurol, Milan, Italy
[4] Rutgers State Univ, New Jersey Med Sch, Newark, NJ 07102 USA
[5] Akad Krankenhaus Sozialstiftung, Neurol Klin, Bamberg, Germany
[6] Ohio State Univ Hosp, Columbus, OH 43210 USA
[7] Copenhagen Univ Hosp, Dept Neurol, Danish MS Ctr, Copenhagen, Denmark
[8] Univ Lille, CHU Lille, LIRIC, INSERM,U 995, Lille, France
[9] EMD Serono Inc, Billerica, MA USA