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: At the end of 1 year 24 group 1 ( 92.3 % ) and 23 group 2 ( 90.3 % ) patients had an improved drainage pattern .
Example Output: not found

Example Input: Eligible patients were children and adolescents with HFA .
Example Output: children and adolescents with HFA

Example Input: Also , the average number of wet nights in group 1 was significantly lower than at baseline ( p = 0.002 ) .
Example Output:
not found