[1] Univ Siena, Dept Neurol & Behav Sci, Siena, Italy
[2] Sheba Acad Med Ctr, Multiple Sclerosis Ctr, Ramat Gan, Israel
[3] Vrije Univ Amsterdam Med Ctr, Dept Radiol, Amsterdam, Netherlands
[4] Univ Bern, Univ Hosp Berne, Bern, Switzerland
[5] Univ Hosp Basel, Dept Neurol, Basel, Switzerland
[6] Univ New South Wales Med, Ingham Inst Appl Med Res, Sydney, NSW, Australia
[7] Univ Vita Salute San Raffaele, Expt Neurophysiol Unit, Milan, Italy
[8] Univ Toronto, St Michaels Hosp, Toronto, ON, Canada
[9] Univ Montreal, Dept Neurosci, Montreal, PQ, Canada
[10] Queen Mary Univ London, Blizard Inst Neurosci, Barts & London Sch Med & Dent, London, England
[11] Univ Copenhagen, Rigshosp, Danish MS Ctr, Copenhagen, Denmark
[12] Univ Lille, INSERM, U1172, FHU Imminent,CHU Lille, Lille, France
[13] Univ Munster, Dept Neurol, Inst Translat Neurol, Munster, Germany
[14] Merck KGaA, Darmstadt, Germany
[15] Merck, Aubonne, Switzerland