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| Methods | Randomised clinical controlled trial on children | |
| Participants | 115 eligible 91 enrolled 24 excluded due to various reasons | |
| Interventions | metronidazole versus placebo rectal suppositorium prior to surgery and 4 days follow up | |
| Outcomes | Wound infection (not defined) | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
