TY - JOUR T1 - Hemodynamic Impairment and Stroke Risk: Prove It JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 233 LP - 234 VL - 22 IS - 2 AU - Colin P. Derdeyn Y1 - 2001/02/01 UR - http://www.ajnr.org/content/22/2/233.abstract N2 - ER -