A comparison of two-dimensional echocardiography vs carotid duplex scanning in older patients with cerebral ischemia.
Voyce SJ, Aurigemma GP, Dahlberg S, Orsinelli D, Pape LA, Sweeney A, Cardullo P, Recht L. A comparison of two-dimensional echocardiography vs carotid duplex scanning in older patients with cerebral ischemia. Arch Intern Med. 1992 Oct; 152(10):2089-93.