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Figure 1 Box plots illustrating the median levels of nt-pro-brain natriuretic peptide (nt-proBNP) (A) and pro-atrial natriuretic peptide (proANP) (B) in subjects with lone atrial fibrillation (LAF) and in healthy control subjects. Boxes show interquartile ranges, and the bars represent the 10th and 90th percentiles.
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