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: To compare a collaborative approach , the Three Component Model ( 3CM ) , with usual care for treating PTSD in primary care .
Example Output: PTSD

Example Input: We conducted a study including 15 depressive patients who had been under antidepressant treatment for at least one month .
Example Output: 15 depressive patients who had been under antidepressant treatment for at least one month

Example Input: Little evidence has been published for the nondiabetic population .
Example Output:
not found