RT Journal Article SR Electronic T1 Corrections JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1132 OP 1132 DO 10.1136/jnnp-2012-302436corr1 VO 83 IS 11 YR 2012 UL http://jnnp.bmj.com/content/83/11/1132.1.abstract AB