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.
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Question: We have compared the efficacy of granisetron with perphenazine in the prevention of vomiting after tonsillectomy with or without adenoidectomy in children .

Answer: adenoidectomy in children


Question: This was a randomised non-inferiority trial carried out in a school-based clinic in New Zealand .

Answer: not found


Question: The 2 groups were comparable in baseline clinical and urodynamic data .

Answer:
not found