RT Journal Article SR Electronic T1 A CRITICAL REVIEW JF Journal of Neurology and Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 45 OP 65 DO 10.1136/jnnp.2.1.45 VO 2 IS 1 A1 Gillespie, R. D. YR 1939 UL http://jnnp.bmj.com/content/2/1/45.abstract AB