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.

Example Input: Daily supplementation significantly increased plasma concentrations of alpha-tocopherol and beta-carotene in the supplemented group ( Delta 14.4 ( SE 3.2 ) and 0.4 ( se 0.1 ) micromol/l ; P < 0.001 and P < 0.01 ) .
Example Output: not found

Example Input: Bestatin is shown to be a clinically useful drug for immunotherapy of adult ANLL , since it has prolonged survival and remission especially in elderly patients , with few side-effects .
Example Output: not found

Example Input: Stent related symptoms were present in a good proportion of patients in groups 1 and 2 but there was a significant difference in the incidence of urinary tract infections ( 11.5 % versus 38.1 % , p = 0.04 ) .
Example Output:
not found