RT Journal Article SR Electronic T1 Correction JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 126 OP 126 DO 10.1136/jnnp.2006.097923corr1 VO 81 IS 1 YR 2010 UL http://jnnp.bmj.com/content/81/1/126.4.abstract AB