TY - JOUR JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 1432 LP - 1432 VL - 23 IS - 8 AU - Murtagh Y1 - 2002/09/01 UR - http://www.ajnr.org/content/23/8/1432.abstract N2 - ER -