RT Journal Article SR Electronic T1 Professor J A Simpson—an appreciation JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 566 OP 567 DO 10.1136/jnnp.43.7.566 VO 43 IS 7 A1 Ian D Melville YR 1980 UL http://jnnp.bmj.com/content/43/7/566.abstract AB