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: A standard general anaesthetic technique was employed throughout .
Example Output: not found

Example Input: Studies in animals show good healing after 1 to 2 weeks of ureterotomy .
Example Output: not found

Example Input: Depressive symptoms and biochemically verified abstinence were assessed 1 week prior to and 2 , 8 , 16 , and 26 weeks after quit date .
Example Output:
not found