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| Methods | RCT | |
| Participants | Abdominal surgery | |
| Interventions | NGT | |
| Outcomes | time to flatus length of stay anast. leak Chest compl wound inf. nausea vomit QOL stuff | |
| Notes | 31 | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
