| Stage of fibrosis | PCR | ||||
| Before | 4 weeks | 8 weeks | 12 weeks | 3 months | |
| No, no. (%) | 0 (0) | 50 (100) | 50 (100) | 44 (88) | 33 (66) |
| F3, no. (%) | 17 (34) | 0 (0) | 0 (0) | 2 (4) | 4 (8) |
| F4, no. (%) | 33 (66) | 0 (0) | 0 (0) | 4 (8) | 13 (26) |
| P value | - | - | - | 0.001** | 0.001** |