Table 1. Patient information.

	Preterm group	Term controls
Number of Patients	18	4
Number of Samples	30	6
Median Gestational Age (range)	26+5 (23+4–31+2 wks)	38+1 (37+2–38+3 wks)
Median Birth Weight (range)	960 g (550–1920 g)	2730 g (2570–3000 g)
Male∶Female	11∶7	4∶0
Vaginal∶Caesarean delivery	10∶8	1∶3
RDS∶CLD	7∶11	-
At least 1 dose antenatal corticosteroids	14/18 (78%)	1/4 (25%)
Patent Ductus Arteriosus	14/18 (78%)	0/4 (0)%
Surfactant therapy (%)	18/18 (100%)	0/4 (0%)
Rupture of membranes >24 hours	4/18 (22%)	0/4 (0%)
Median days of ventilation (range)	18 (1–92 d)	3.5 (2–21 d)