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.

Q: A pilot study on the effect of progressive muscle relaxation training of patients after stoma surgery .

A: patients after stoma surgery
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Q: Fluoxetine therefore has inverse effects on mPFC activation in ASD and ADHD during reversal learning , suggesting dissociated underlying serotonin abnormalities .

A: not found
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Q: Internal stenting is an integral part of endopyelotomy .

A:
not found
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