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Figure 2 Comparison of BNP plasma concentrations in patients assigned to the three distinct prognostic score risk groups according to their HFSS (low risk: HFSS 8.10, n = 58; medium risk: HFSS 7.20 to 8.09, n = 10; and high risk: HFSS 7.20, n = 10). Data are presented as the mean value ± SEM.