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.

Q: We have compared the efficacy of granisetron with perphenazine in the prevention of vomiting after tonsillectomy with or without adenoidectomy in children .

A: granisetron, perphenazine
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Q: The addition of chronic vasodilator therapy with flosequinan to standard digitalis-diuretic regimens is capable of inducing clinical improvement in patients with moderate to severe chronic heart failure .

A: flosequinan
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Q: No change was evident in group 2 .

A:
not found
****