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.

Input: Consider Input: Comparison of weakness progression in inclusion body myositis during treatment with methotrexate or placebo .

Output: methotrexate, placebo


Input: Consider Input: Serum and urine biochemical parameters related to calcium status and bone metabolism remained unaltered .

Output: not found


Input: Consider Input: Economic burden of childhood autism spectrum disorders .


Output: not found