RT Journal Article SR Electronic T1 Cerebral Vascular Disease 5 JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 846 OP 847 DO 10.1136/jnnp.49.7.846-b VO 49 IS 7 A1 Je Rees YR 1986 UL http://jnnp.bmj.com/content/49/7/846.3.abstract AB