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| Methods | Randomized controlled trial |
| Participants | Patients undergoing middle ear surgery |
| Interventions | Orally administered ginger (1 gr with 30 mL water) or ondansetron (8 mg with 30 mL water) tablet or placebo (only 30 mL water) 1 hour before surgery |
| Outcomes | PONV |
| Notes | No full text available |
