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Figure 1 Association between plasma brain natriuretic peptide (BNP) levels and (A) vena contracta width, (B) left ventricular end-systolic dimension, and (C) left atrial dimension in asymptomatic (open circles) and symptomatic (closed circles) patients with mitral regurgitation. The dashed lines indicate the upper limit of the normal laboratory reference range for BNP. Continued on next page.
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