Epicardial fat volume in patients with left ventricular systolic dysfunction - Khawaja, T; Greer, C; Chokshi, A; Chavarria, N; Thadani, S; Jones, M; Schaefle, K; Bhatia, K; Collado, J E; Shimbo, D; Einstein, A J; Schulze, P C (Am J Cardiol, 2011)