We used a correlation matrix to tabulate the pairwise correlations among sepsis prognostic scores (APACHE II, SOFA, MEDS, PIRO2009, PIRO2011, and PIRO2013) and logarithms of cardiac biomarkers (log(BNP), log(CK), log(CK-MB), and log(TNI)) (S3 Fig). Here, NPPB is linked to Sepsis.