Vertebrobasilar DiseaseNEJM 352:2618-2626, Savitz,S.I.&Caplan,L.R., 2005
Diffusion-Weighted MRI in 300 Patients Presenting Late With Subacute Transient Ischemic Attack or Minor StrokeStroke 35:2459-2465, Schulz,U.G.,et al, 2004