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Figure 2 The percentage of patients who had at least a 60-s increase from baseline in exercise duration and the percentage of patients with at least a 1.25 ml/kg/min from baseline at 6 months after treatment (co-primary end points; intent-to-treat analysis, last observation carried forward). VO2 = oxygen uptake. Solid bar = enhanced external counterpulsation; open bar = control subjects.
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