RT Journal Article SR Electronic T1 The prognostic value of CSF neurofilaments in multiple sclerosis at 15-year follow-up JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1388 OP 1390 DO 10.1136/jnnp-2014-309827 VO 86 IS 12 A1 Petzold, Axel YR 2015 UL http://jnnp.bmj.com/content/86/12/1388.abstract AB