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.

Ex Input:
Results indicated that there was a significant decrease in both the C-STAI score ( F = 4.66 , P < 0.05 ) and the WHOQoL score ( F = 4.74 , P < 0.05 ) in the experimental group .

Ex Output:
not found


Ex Input:
Repeated-measures analyses within patients assessed drug effects .

Ex Output:
not found


Ex Input:
No significant differences , within and between groups , were observed in the exercise-induced increase in the ratios para- and ortho-hydroxyantipyrine to antipyrine .

Ex Output:

not found