PT - JOURNAL ARTICLE ED - , TI - CORRECTIONS AID - 10.1136/jnnp.57.5.666-a DP - 1994 May 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 666--666 VI - 57 IP - 5 4099 - http://jnnp.bmj.com/content/57/5/666.2.short 4100 - http://jnnp.bmj.com/content/57/5/666.2.full SO - J Neurol Neurosurg Psychiatry1994 May 01; 57