RT Journal Article SR Electronic T1 Correction: Discontinuing disease-modifying therapy in MS after a prolonged relapse-free period: a propensity score-matched study JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP e2 OP e2 DO 10.1136/jnnp-2016-313760corr1 VO 90 IS 4 YR 2019 UL http://jnnp.bmj.com/content/90/4/e2.abstract AB