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The two mediation models. IFABP is the exposure and inflammatory biomarkers are mediators in both models. Organ dysfunction is the outcome in Model 1 and 30-day mortality is the outcome in Model 2. Potential confounding factors such as whole-body ischaemia could affect all variables. IFABP: Intestinal Fatty Acid Binding Protein. IL: Interleukin; TCC: terminal complement complex.
