MIF and DDT concentrations (median, IQR) were lower in infants who developed BPD and/or LOS than in those who did not develop these complications (MIF: 45.9 ng/ml, 29.8–78.2 versus 75.7 ng/ml, 52.1–89.6, P = 0.04; DDT: 96.8 ng/ml, 56.7–146.2 versus 162.1 ng/ml, 113.6–223.6, P = 0.004; Figures 6A,B). Here, MIF is linked to bronchopulmonary dysplasia.