RT Journal Article SR Electronic T1 Vertebral aneurysm due to isolated spontaneous dissection of the intracranial vertebral artery JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 946 OP 946 DO 10.1136/jnnp.65.6.946 VO 65 IS 6 A1 P J MARTIN A1 T P ENEVOLDSON YR 1998 UL http://jnnp.bmj.com/content/65/6/946.abstract AB