TASK DEFINITION: In medical studies, treatments are tested within a group of study participants. You will be given a sentence of a study report in which your task is to list the phrases that give information about the participants of the study. You should list the phrases in the same order that they appear in the text, separated by commas. If no information about the participants is mentioned, just output "not found". Relevant information about participants include: gender, medical conditions, location, number of people participating. Do not contain participant mentions without relevant information.
PROBLEM: Anti-emetic efficacy of prophylactic granisetron compared with perphenazine for the prevention of post-operative vomiting in children .

SOLUTION: post-operative vomiting in children

PROBLEM: Confidence intervals around these ratios suggested wide variability of cost effectiveness of aquatic exercise .

SOLUTION: not found

PROBLEM: Teacher-report data also confirmed that children receiving the intervention made significant improvements in social functioning from pre- to post-treatment .

SOLUTION:
children receiving the intervention

