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: Toxicity was primarily hematological and bimodal : 32 % had grade 3 or 4 leukopenia and 24 % had grade 3 or 4 thrombocytopenia ; 22 % had no leukopenia and 44 % had no thrombocytopenia .
Example Output: not found

Example Input: Participants were 58 children ( 46 boys ) with autism between 3 and 4 years of age .
Example Output: 58 children ( 46 boys ) with autism between 3 and 4 years of age

Example Input: Development of renal disease in people at high cardiovascular risk : results of the HOPE randomized study .
Example Output:
people at high cardiovascular risk