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Comparison of ADMA (a) and L-arg (b) measurements as well as the resulting ratio of both (c) in healthy volunteers (n = 30, black continuous line), patients following major abdominal surgery (n = 30, short dashed line) and patients with septic shock (n = 60, long dashed line). Data in line charts are given as medians and the 95% CI. Concerning symbolism and higher orders of significance: P < 0.05: *, P < 0.01: **, P < 0.001: ***, n.s.: not statistically significant.
