TY - JOUR T1 - Erratum JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 199a LP - 199 VL - 28 IS - 2 A2 - , Y1 - 2007/02/01 UR - http://www.ajnr.org/content/28/2/199a.abstract N2 - ER -