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.

[Q]: The in vitro assay showed similar solubility after the in vitro digestion and similar transport across Caco-2 cells .
[A]: not found


[Q]: The course of depression in recent onset rheumatoid arthritis : the predictive role of disability , illness perceptions , pain and coping .
[A]: rheumatoid arthritis


[Q]: 353 children with positive throat swabs for GABHS were randomised to amoxicillin ( n = 177 ) or penicillin V ( n = 176 ) .
[A]:
not found