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Figure 4 Distribution of J Waves Among Patients With Idiopathic VF, Matched Control Subjects, and Healthy Athletes

The bars show the percentage of individuals with J-point elevation in each of the 3 patient groups. The y axis denotes the percentage of patients with J-point elevation in any lead. The partition of each bar demonstrates the distribution of J-point elevation in the different leads (the numbers within the bars exceed 100%, because some patients had J-point elevation in more than 1 group of leads). VF = ventricular fibrillation.