Serum concentrations of cytokines in patients with and without bacterial infection.

<p>*Expressed in median (min-max); unit is pg/ml. Samples with non-detectable cytokine levels were considered to be zero pg/ml.</p>†<p>Assessed using the Mann-Whitney test.</p>§<p>Assessed using multiple logistic regression (all p-values<0.20 in univariate analyses were entered in the multivariate model).