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 Q]: Depressive patients are able to follow prescribed lifestyle recommendations in the short-term .
[EX A]: not found

[EX Q]: However , there was an inverse relation between time-varying abstinence ( vs. smoking ) and concurrent level of depressive symptoms , indicating that transitions from smoking to abstinence within individuals were associated with reductions in depressive symptoms .
[EX A]: not found

[EX Q]: Also , fewer subjects than the controls had significant painful episodes ( 50.0 % versus 92.7 % ) ; febrile illness ( 46.6 % versus 87.3 % ) and admission rate ( 3.4 % versus 34.5 % ) ( p < 0.001 ) .
[EX A]:
not found