Value of Myocardial Viability Estimation by Dobutamine Stress Echocardiography in Assessing Risk Preoperatively Before Non-Cardiac Vascular Surgery in Patients with Left Ventricular Ejection Fraction< 35% - Karagiannis, Stefanos E; Feringa, Harm HH; Radosav Vidakovic, MD; van Domburg1 PhD, Ron; Olaf Schouten, MD; Bax, Jeroen J; Karatasakis, George; Cokkinos, Dennis V (Clinical Stress, 2007)