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: After three weekly doses of epoetin alfa 40,000 U , a dose of 120,000 U can be administered safely once every 3 weeks without increasing transfusion needs or sacrificing QOL .
Example Output: not found

Example Input: Accordingly , the current study examined within-person covariation between time-varying abstinence and depressive symptom in a multilevel model ( MLM ) , which allowed for transitions between smoking statuses within a participant .
Example Output: not found

Example Input: Inverse Effect of Fluoxetine on Medial Prefrontal Cortex Activation During Reward Reversal in ADHD and Autism .
Example Output:
ADHD, Autism