Predicting progression in primary progressive multiple sclerosis: A 10-year multicenter study

Khaleeli, Z; Ciccarelli, O; Manfredonia, F; Barkhof, F; Brochet, B; Cercignani, M; Dousset, V; Filippi, Massimo; Montalban, X; Polman, C; Rovaris, M; Rovira, A; Sastre Garriga, J; Vellinga, M; Miller, D; Thompson, A.