Feasibility of Myocardial Performance Index for Evaluation of Left Ventricular Function during Dobutamine Stress Echocardiography before and after Coronary Artery Bypass Grafting. - Hashemi, Nashmil; Samad, Bassem A.; Hedman, Anders; Brodin, Lars‐Åke; Alam, Mahbubul (Echocardiography, 2014)