The effect of interferon beta-1b treatment on MRI measures of cerebral atrophy in secondary progressive multiple sclerosis

Molyneux, Pd; Kappos, L; Polman, C; Pozzilli, C; Barkhof, F; Filippi, Massimo; Yousry, T; Hahn, D; Wagner, K; Ghazi, M; Beckmann, K; Dahlke, F; Losseff, N; Barker, Gj; Thompson, Aj; Miller, Dh; Comi, Giancarlo; the European Study Group on Interferon beta 1b in Secondary Progressive Multiple, Sclerosis