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:
During the first 6 months following a planned quit attempt , being abstinent in a particular week appears to be associated with lower levels of concurrent depressive symptoms .

Ex Output:
not found


Ex Input:
In addition , supplementation did not affect the exercise-induced increase in thiobarbituric acid reactive substances in plasma .

Ex Output:
not found


Ex Input:
Time-varying smoking abstinence predicts lower depressive symptoms following smoking cessation treatment .

Ex Output:

not found