[1] Univ Vita Salute San Raffaele, San Raffaele Sci Inst, Neuroimaging Res Unit, Milan, Italy
[2] Ist Sci San Raffaele, Dept Neurol, Milan, Italy
[3] Hosp Gallarate, Multiple Sclerosis Study Ctr, Gallarate, Italy
[4] C Mondino Natl Neurol Inst, Dept Child Neurol & Psychiat, Pavia, Italy
[5] Spedali Civili Brescia, Reg Multiple Sclerosis Ctr, Presidio Montichiari, Brescia, Italy
[6] Univ Florence, Dept Neurol, Florence, Italy
[7] Univ Vita Salute San Raffaele, San Raffaele Sci Inst, Dept Neurol, Milan, Italy
[8] Osped Gallarate, Ctr Studi Sclerosi Multipla, Gallarate, Italy
[9] Univ Vita Salute San Raffaele, Neuroradiol, Milan, Italy