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Figure 3 Kaplan-Meier analyses of patients with congestive heart failure treated with or without beta-blockers, stratified by (A) peak oxygen consumption (peakVO2) (> or  14 ml/min per kg), (B) left ventricular ejection fraction (LVEF) (> or 20%) and the median values of (C) norepinephrine and (D) N-terminal pro-brain natriuretic peptide (NT-proBNP) (all p < 0.0001).
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