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| Trial | Cyclosporin treated | Placebo treated | Years (range) | |
| Alexander 1992 | 8.5 (5 20) | 8.5 (5‐20) | 9.3 (0.3 ‐ 25) | |
| Lock 1996 | 11 (5‐20) | 12 (5 ‐ 22.5) | 12 (1‐37) | |
| Nizankowska | 15.9 (10 ‐ 25) | 16.5 (5 ‐ 27.5) | 8 (2.5 ‐ 22) |
