PT - JOURNAL ARTICLE AU - Qian, Zhong AU - CastaƱeda, Wilfrido R. TI - Reply DP - 2000 May 01 TA - American Journal of Neuroradiology PG - 988--990 VI - 21 IP - 5 4099 - http://www.ajnr.org/content/21/5/988.short 4100 - http://www.ajnr.org/content/21/5/988.full SO - Am. J. Neuroradiol.2000 May 01; 21