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Figure 2 Pericardial total insulin-like growth factor-1 (IGF-1) levels (A), pericardial free IGF-1 levels (B), plasma total IGF-1 levels (C), and plasma brain natriuretic peptide (BNP) levels (D) in patient groups with left ventricular ejection fraction (LVEF) values of >50%, 30% to 50%, and <30%. *p < 0.01 compared with the LVEF >50% group.