RT Journal Article SR Electronic T1 MATTERS ARISING JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 524 OP 524 DO 10.1136/jnnp.55.6.524 VO 55 IS 6 YR 1992 UL http://jnnp.bmj.com/content/55/6/524.1.abstract AB