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* |