PT - JOURNAL ARTICLE ED - , TI - MATTERS ARISING AID - 10.1136/jnnp.56.2.226-a DP - 1993 Feb 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 226--226 VI - 56 IP - 2 4099 - http://jnnp.bmj.com/content/56/2/226.2.short 4100 - http://jnnp.bmj.com/content/56/2/226.2.full SO - J Neurol Neurosurg Psychiatry1993 Feb 01; 56