Serum Neurofilament Levels and PML Risk in Patients With Multiple Sclerosis Treated With Natalizumab.

Fissolo N, Pignolet B, Rio J, Vermersch P, Ruet A, deSèze J, Labauge P, Vukusic S, Papeix C, Martinez-Almoyna L, Tourbah A, Clavelou P, Moreau T, Pelletier J, Lebrun-Frenay C, Bourre B, Defer G, Montalban X, Brassat D, Comabella M.