PT - JOURNAL ARTICLE ED - , TI - CORRECTION AID - 10.1136/jnnp.2006.095596corr1 DP - 2007 Feb 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 205--205 VI - 78 IP - 2 4099 - http://jnnp.bmj.com/content/78/2/205.3.short 4100 - http://jnnp.bmj.com/content/78/2/205.3.full SO - J Neurol Neurosurg Psychiatry2007 Feb 01; 78