Large-scale, multicentre, quantitative MRI study of brain and cord damage in primary progressive multiple sclerosis

Rovaris, M; Judica, E; Sastre Garriga, J; Rovira, A; Sormani, Mp; Benedetti, B; Korteweg, T; De Stefano, N; Khaleeli, Z; Montalban, X; Barkhof, F; Miller, Dh; Polman, C; Thompson, Aj; Filippi, Massimo