Table 1.

Number of blood samples per subject.

Number of Samples	Number of subjects
1	4,138
2	1,691
3	613
4	294
5	164
6	85
7	65
8	31
9	28
10	20
11	8
12	5
13	3
14	4
15	1
16	1
17	2
18	1
21	1
22	1
24	1
Total	7,157