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.

Ex Input:
The patients suffered from partial or total intestinal obstruction , necrotizing enterocolitis or pyloric stenosis.All infants were fasting and studied during periods of at least one hour .

Ex Output:
not found


Ex Input:
We conclude that oral methotrexate did not slow down progression of muscle weakness but decreased serum creatine kinase activity .

Ex Output:
methotrexate


Ex Input:
After the 6-month training period , the SST Group made fewer errors in labeling anger on adult faces , whereas error rates in the LA Group remained stable .

Ex Output:

SST, LA