Left ventricular discoordination index measured by speckle tracking strain rate imaging predicts reverse remodelling and survival after cardiac resynchronization therapy. - Wang CL; Powell BD; Redfield MM; Miyazaki C; Fine NM; Olson LJ; Cha YM; Espinosa RE; Hayes DL; Hodge DO; Lin G; Friedman PA; et al. (European Journal of Heart Failure, 2012)