Magnetic resonance imaging correlates of physical disability in relapse onset multiple sclerosis of long disease duration

Kearney, H; Rocca, Ma; Valsasina, P; Balk, L; Sastre Garriga, J; Reinhardt, J; Ruggieri, S; Rovira, A; Berger, C; Kappos, L; Sprenger, T; Tortorella, P; Rovaris, M; Gasperini, C; Montalban, X; Geurts, Jjg; Polman, Ch; Barkhof, F; Filippi, Massimo; Altmann, Dr; Ciccarelli, O; Miller, Dh; Chard DT on behalf of the Magnetic Imaging in Multiple Sclerosis collaborative, Group