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 present a novel Bayesian adaptive comparative effectiveness trial comparing three treatments for status epilepticus that uses adaptive randomization with potential early stopping .
Example Output: not found

Example Input: Multicenter , randomized , controlled , two arm-parallel , clinical trial .
Example Output:
not found