RT Journal Article SR Electronic T1 BOOK REVIEWS JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 579 OP 579 DO 10.1136/jnnp.56.5.579-a VO 56 IS 5 A1 MA Clarke YR 1993 UL http://jnnp.bmj.com/content/56/5/579.2.abstract AB