RT Journal Article SR Electronic T1 Macs with multiple sclerosis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 410 OP 411 DO 10.1136/jnnp.66.3.410b VO 66 IS 3 A1 SHEPHERD, DAVID I YR 1999 UL http://jnnp.bmj.com/content/66/3/410.3.abstract AB