Clinical data of preterm infants.

Data is given as number (percentage) or mean+/−SD (range). 1Prenatal steroids if given parenterally before delivery. 2Diagnosis of maternal chorioamnionitis was made by postnatal histopathological examination of the placenta. 3All infants were off oxygen at time of analysis. 4CRIB Score is a postnatal score including birthweight, gestational age, minimum and maximum FiO2 and maximum Base Excess during the first 12 hours as well as malformations. It can range from minimum 0 points to maximum 23 [26].