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:
Economic evaluation of aquatic exercise for persons with osteoarthritis .

Ex Output:
persons with osteoarthritis


Ex Input:
The Junior Detective Training Program appeared to be effective in enhancing the social skills and emotional understanding of children with AS .

Ex Output:
children with AS


Ex Input:
Eighteen patients who had undergone stoma surgery were assessed with respect to their anxiety level and self-reported quality of life ( QoL ) on three occasions ; namely , immediately after surgery , 5 weeks after surgery , and 10 weeks after surgery .

Ex Output:

not found