RT Journal Article SR Electronic T1 Huang and Broe reply JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 721 OP 721 DO 10.1136/jnnp.49.6.721-a VO 49 IS 6 YR 1986 UL http://jnnp.bmj.com/content/49/6/721.2.abstract AB