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Figure 3 B-type natriuretic peptide levels in patients with atrial fibrillation on the electrocardiogram (ECG) on admission (n = 158), and in patients with a medical history of atrial fibrillation but sinus rhythm on the ECG on admission (n = 134) (p = 0.189). B-type natriuretic peptide (BNP) levels are plotted on a log scale. The boxes represent the 25th, 50th, and 75th percentiles, and the whiskers indicate the 10th and 90th percentiles.
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