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.

We conducted a study including 15 depressive patients who had been under antidepressant treatment for at least one month .
15 depressive patients who had been under antidepressant treatment for at least one month

However , this approach can not account for potential third variables between participants that may affect both smoking and depression .
not found

Intake of lime juice was recently demonstrated to facilitate clearance of the malaria parasite .

not found