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:
Cardiovascular reactivity to psychological stress may be one mechanism for the enhanced risk , but the small number of studies examining whether OC users who smoke have greater reactivity have produced mixed results .

Ex Output:
not found


Ex Input:
Women who smoke and take oral contraceptives ( OCs ) have significantly increased risk of cardiovascular disease , but the exact mechanismsfor the increased risk are not known .

Ex Output:
oral contraceptives


Ex Input:
To investigate whether a physiotherapy service to an EECU altered the rate of hospital admission , rate of re-presentation to the ED , visits to community healthcare practitioners , return to usual work/home/leisure activities and patient satisfaction .

Ex Output:

physiotherapy