text: Anti-emetic efficacy of prophylactic granisetron compared with perphenazine for the prevention of post-operative vomiting in children .
entities.text: granisetron
entities.type: intervention
entities.text: perphenazine
entities.type: intervention
entities.text: Anti-emetic efficacy
entities.type: outcome
entities.text: prevention
entities.type: outcome
entities.text: children
entities.type: participant