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:
Subjects were randomly divided in two groups : supplementation ( n 11 ) with 100 mg dl-alpha-tocopheryl acetate , 200 mg ascorbic acid , and 2 mg beta-carotene , and placebo ( n 9 ) .

Ex Output:
dl-alpha-tocopheryl acetate, ascorbic, beta-carotene, placebo


Ex Input:
Since the results were essentially identical between the techniques , it seems that comparable pathophysiological factors affect TLCO during breath holding and constant exhalation .

Ex Output:
breath holding, constant exhalation


Ex Input:
A physiotherapy service for EECU patients , as provided in this study , did not reduce the rate of hospital admission , rate of re-presentation to the ED , use of community healthcare resources , or improve the rate of return to usual work/home/leisure activities or patient satisfaction .

Ex Output:

not found