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]: The 101 eligible cases ( bestatin : 48 , control : 53 ) were analyzed ; the bestatin group achieved longer remission than the control group and a statistically significant longer survival .
[A]: bestatin


[Q]: At the end of 1 year 24 group 1 ( 92.3 % ) and 23 group 2 ( 90.3 % ) patients had an improved drainage pattern .
[A]: not found


[Q]: Outcome results applied to life expectancy tables were used to estimate QALYs .
[A]:
not found