PT - JOURNAL ARTICLE ED - , TI - ABN Abstracts DP - 2007 Sep 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 1014--1038 VI - 78 IP - 9 4099 - http://jnnp.bmj.com/content/78/9/1014.short 4100 - http://jnnp.bmj.com/content/78/9/1014.full SO - J Neurol Neurosurg Psychiatry2007 Sep 01; 78