Table 1.

Study population.

Age	No. of subjects by sex
	Male	Female	Unknown	Total
Birth	24	24	22a	70
1–3 months	3	7	0	10
4–6 months	6	11	2	19
7–9 months	2	4	0	6
10–14 months	39	24	1	64
Total	74	70	25	169

^aCord blood samples obtained from the Carolinas Cord Blood Bank.