Table I.

Demographic information of enrolled subjects.

Subject no.	Sex	Age range (years)
1	Female	10–19
2	Male	10–19
3	Female	10–19
4	Female	10–19
5	Male	20–29
6	Male	20–29
7	Male	20–29
8	Female	20–29
9	Male	40–49
10	Female	40–49
11	Male	40–49
12	Male	60–69
13	Female	60–69
14	Female	60–69
15	Female	70–79
16	Female	70–79
17	Female	70–79
18	Male	70–79