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.

Input: Consider Input: 3CM participants also had more mental health visits and higher outpatient pharmacy costs .

Output: not found


Input: Consider Input: Previous analyses that focused on health care underestimated this economic burden , particularly for school systems .

Output: not found


Input: Consider Input: As calcium acquired during adolescence is essential to maximize peak bone mass and to prevent osteoporosis , possible long-term effects of excessive MRP intake during this period warrant attention .


Output: not found