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Figure 5 Graph showing actuarial event-free rates after tranvenous fourth generation buttoned device occlusion of atrial septal defects. The 95th confidence intervals were cath: 0.6%; one day: 1.2%; one month: 1.6%; six months: 2.0%; one year: 2.7%; two years: 3.9%; three years: 5.9%; four years: 8.2% and five years: 20%.
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