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Table 1.
Information of the 4 groups
| Groups | Number | Hulth’s method | Pirfenidone |
|---|---|---|---|
| Sham control group (Ctrl) | 5 | No | No |
| 4-week group | 5 | Yes | No |
| 12-week group | 5 | Yes | No |
| PFD group (PFD) | 5 | Yes | Yes |