PT - JOURNAL ARTICLE ED - , TI - Neurosurgery Practice Questions and Answers DP - 2006 Nov 01 TA - American Journal of Neuroradiology PG - 2228--2228 VI - 27 IP - 10 4099 - http://www.ajnr.org/content/27/10/2228.short 4100 - http://www.ajnr.org/content/27/10/2228.full SO - Am. J. Neuroradiol.2006 Nov 01; 27