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 Q]: When one treatment is superior to the other two , the trial design provides better patient care , higher power , and a lower expected sample size .
[EX A]: not found

[EX Q]: Prior adjuvant chemotherapy was permitted .
[EX A]: not found

[EX Q]: Weights and heights were measured at the tri-monthly treatment visits for a period of one year .
[EX A]:
not found