| Change in lesion counts ‐ total (lesion counts reduction) | |||
| Study | Topical zinc (mean, SD) | No treatment (mean, SD) | P value |
| medium term | |||
| Cunliffe 2005 | Unclear, not reported | Unclear, not reported | 0.707 |
| long term | |||
| Cunliffe 2005 | Long term: 16 weeks after start of treatment, unclear, not reported | Unclear, not reported | 0.707 |
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