TY - JOUR T1 - Reply JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 988 LP - 990 VL - 21 IS - 5 AU - Zhong Qian AU - Wilfrido R. CastaƱeda Y1 - 2000/05/01 UR - http://www.ajnr.org/content/21/5/988.abstract N2 - ER -