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Average in vivo area strain over time, measured by surface markers placed directly on the scar. 4 beats from each of 4 Bgn+/0 and 4 Bgn−/0 hearts were averaged. There was a significant difference between the curves by ANOVA; strain was smaller in Bgn−/0 scars (P=0.005). The variability in strain was also smaller in Bgn−/0 scars.
