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.

Patients were scanned twice , under either an acute dose of Fluoxetine or placebo in a double-blind , placebo-controlled randomized design .
not found

These findings suggest clinically significant benefits of actively treating JA and SP skills in young children with autism .
young children with autism

Aquatic exercisers reported equal ( QWB ) or better ( CHDR , HAQ , PQOL ) health-related quality of life compared with controls .

not found

