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: Outcome measures will be assessed before and after the 6 month intervention period .

A: not found
****
Q: Treatment group participants were better able to suggest appropriate emotion-management strategies for story characters at post-intervention than at pre-intervention , whereas control participants were not .

A: not found
****
Q: Results indicate that expressive language gains were greater for both treatment groups compared with the control group , and results could not be explained by differences in other interventions in which children participated .

A:
not found
****