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Fig. 1
24-hour hormonal output is intact in HFrEF patients. (a) Parameters used for quantitative analysis of the 24-h melatonin and cortisol variation. 24-hour (b) melatonin (pmol/L), (c) cortisol (nmol/L) and (d) cTnT (ng/L) concentration. Each dot (red = patients, blue = controls) represents individual concentration at a given time-point. Lines indicate median values of all patients (red; N = 44?46) and controls (blue; N = 23?24). Horizontal bar indicates day (=white) and night (=black). cTnT = cardiac troponin T; HFrEF = heart failure with reduced ejection fraction.
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