One year follow up study of primary and transitional progressive multiple sclerosis

Stevenson, Vl; Miller, Dh; Leary, Sm; Rovaris, M; Barkhof, F; Brochet, B; Dousset, V; Dousset, V; Filippi, Massimo; Hintzen, R; Montalban, X; Polman, Ch; Rovira, A; de Sa, J; Thompson, Aj