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Figure 1 Box plots of baseline QT interval (QTc) duration and QT dispersion (QTD) and their changes from baseline to 48 days following biventricular pacemaker implantation. The five solid horizontal lines represent the 10th, 25th, 50th, 75th, and 90th percentiles of each variable, from bottom to top. MAE = major arrhythmic events.
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