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:
These were initial level of depression , disability , pain , beliefs about the consequences of arthritis and coping strategies .

Ex Output:
not found


Ex Input:
Short-term phasic activity was only found in 13 out of 40 of the normal infants ( 32.5 % ) .

Ex Output:
not found


Ex Input:
After treatment 11 group 1 patients ( 78.6 % ) had a partial or full response to posterior tibial nerve stimulation but only 2 ( 14.3 % ) in group 2 had a partial response ( p = 0.002 ) .

Ex Output:

posterior tibial nerve stimulation