Months of Treatment

Control

Melatonin

6

8.7 × 10−9 ± 5.7 × 10−9

4.2 × 10−9 ± 9.8 × 10−9

10

4.5 × 10−8 ± 1.46 × 10−8

3.7 × 10−8 ± 2.2 × 10−9

14

8.6 × 10−8 ± 7.1 × 10−9

6.4 × 10−9 ± 4.8 × 10−9*