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Usefulness of three-dimensional speckle tracking strain to quantify dyssynchrony and the site of latest mechanical activation .4 .汪菁峰，宿燕岗，柏瑾，等.左室起搏电极部位对心脏再同步化治疗疗效的影响.中国心脏起搏与心电生理杂志，2012，26：22-26 .A randomized double-blind crossover trial of triventricular ......