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.

Example Input: This is the first study to document the importance of illness perceptions in recent onset RA .
Example Output: not found

Example Input: Measurement of transfer factor during constant exhalation .
Example Output: not found

Example Input: We investigated whether 13 participants with ASD ( age 7 ; 03-22 ; 03 ) and 13 age-matched typically developing ( TD ) controls could comprehend lexicalized conceptual metaphors ( e.g. , Susan is a warm person ) and novel ones ( e.g. , Susan is a toasty person ) .
Example Output:
13 participants with ASD, 13 age-matched typically developing ( TD