text: We have compared the efficacy of granisetron with perphenazine in the prevention of vomiting after tonsillectomy with or without adenoidectomy in children .
entities.text: granisetron
entities.type: intervention
entities.text: perphenazine
entities.type: intervention
entities.text: efficacy
entities.type: outcome
entities.text: tonsillectomy with or without adenoidectomy in children
entities.type: participant