Cognitive function in primary progressive and transitional progressive multiple sclerosis - A controlled study with MRI correlates

Camp, Sj; Stevenson, Vl; Thompson, Aj; Miller, Dh; Borras, C; Auriacombe, S; Brochet, B; Falautano, M; Filippi, Massimo; Herisse Dulo, L; Montalban, X; Parrcira, E; Polman, Ch; De Sa, J; Langdon, Dw