In medical studies, the efficacy of medical treatments (called interventions) is evaluated 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 describe the intervention(s) of the study. You should list the phrase in the same order that they appear in the text, separated by commas. If no information about the interventions is mentioned, just answer with "not found". Interventions are: a specific drug, surgery, talking therapy, a lifestyle modification, control or placebo treatment. Do not include details, dosages, frequency and duration, intervention mentions that are not in an informative span of text.

Ex Input:
Their average age was 45 years , 91 % were male , 58 % were white , 40 % served in Iraq or Afghanistan , and 42 % served in Vietnam .

Ex Output:
not found


Ex Input:
The study was a two-arm , parallel randomized clinical trial .

Ex Output:
not found


Ex Input:
Flosequinan evoked a significant increase in maximal exercise capacity .

Ex Output:

not found