Table I.

Distribution of all samples (n=107) according to age and gender of the infants.

	Samples
Age of infants after birth	Male (n=33)	Female (n=74)	Total (n=107)
Days after birth
1–15	6	27	33
16–30	8	21	29
31–45	4	11	15
46–60	5	9	14
61–73	4	4	8
74–226	6	2	8
PMA, weeks after birth
23.9–26.9	0	5	5
27.0–29.9	9	12	21
30.0–32.9	6	23	29
33.0–36.9	5	26	31
37.0–41.9	10	6	16
42.0–61.6	3	2	5

PMA, postmenstrual age. PMA=gestational age + chronological age (weeks).