PT - JOURNAL ARTICLE ED - , TI - Friedman et al reply AID - 10.1136/jnnp.47.8.890 DP - 1984 Aug 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 890--890 VI - 47 IP - 8 4099 - http://jnnp.bmj.com/content/47/8/890.short 4100 - http://jnnp.bmj.com/content/47/8/890.full SO - J Neurol Neurosurg Psychiatry1984 Aug 01; 47