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: Results suggest that rapid anesthesia with higher dose is better than slow anesthesia with lower dose for blood sampling in Beluga .
Example Output: not found

Example Input: Patients were scanned twice , under either an acute dose of Fluoxetine or placebo in a double-blind , placebo-controlled randomized design .
Example Output: Fluoxetine, placebo

Example Input: Data analyzed was from a phase III , randomized clinical trial of DOX ( 60 mg/m ( 2 ) every 3 weeks ) or PLD ( 50 mg/m ( 2 ) every 4 weeks ) for the first line therapy for MBC ( n = 509 ) ( O'Brien et al , Ann Oncol .
Example Output:
DOX, PLD