Ultrasonographic Follow-up of Subclavian Stenosis and Occlusion:Natural History and Surgical Treatment
Stroke 19:431-435, Ackermann,H.,et al, 1988
Embolic Lesions From the Subclavian Artery Causing Transient Vertebrobasilar Insufficiency
J Vasc Surg 4:372-375, Ricotta,J.J.,et al, 1986