The IFNB Multiple Sclerosis Study Group. Interferon beta-1b is effective in relapsing-remitting multiple sclerosis. I. Clinical results of a multicenter, randomized, double-blind, placebo-controlled trial. Neurology1993; 43: 655–661.
2.
SormaniMPBruzziP.MRI lesions as a surrogate for relapses in multiple sclerosis: A meta-analysis of randomised trials. Lancet Neurol2013; 12: 669–676.
3.
GoodinDSTraboulseeAKnappertzV. Relationship between early clinical characteristics and long term disability outcomes: 16 year cohort study (follow-up) of the pivotal interferon β-1b trial in multiple sclerosis. J Neurol Neurosurg Psychiatry2012; 83: 282–287.
4.
BrexPACiccarelliOO’RiordanJI. A longitudinal study of abnormalities on MRI and disability from multiple sclerosis. N Engl J Med2002; 346: 158–164.
5.
ScalfariANeuhausADegenhardtA. The natural history of multiple sclerosis: A geographically based study 10: Relapses and long-term disability. Brain2010; 133: 1914–1929.