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: Sixty healthy women , half of whom had been using OCs for at least the previous 6 months , participated in the study .
Example Output: not found

Example Input: Children with parent-reported ASD had higher levels of health care office visits and prescription drug use compared with children without ASD ( P < .05 ) .
Example Output: children without ASD

Example Input: There were no differences between 3CM and usual care in symptoms or functioning .
Example Output:
not found