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:
There were no differences between 3CM and usual care in symptoms or functioning .

Ex Output:
not found


Ex 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 .

Ex Output:
not found


Ex Input:
Women who smoke and take oral contraceptives ( OCs ) have significantly increased risk of cardiovascular disease , but the exact mechanismsfor the increased risk are not known .

Ex Output:

not found