Footprints of Transient Ischemic Attacks: A diffusion-weighted MRI Study - Ay, H; Oliveira-Filho, J; Buonanno, FS; Schaefer, PW; Furie, KL; Can, Y; Rordor, G; Schwamm, LH; Gonzalez, RG; Koroshetz, WJ (Cerebrovasc Dis, 2002)