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:
Role of posterior tibial nerve stimulation in the treatment of refractory monosymptomatic nocturnal enuresis : a pilot study .

Ex Output:
posterior tibial nerve stimulation


Ex Input:
A 20-min set of audiotaped instructions on progressive muscle relaxation training ( PMRT ) was given to the patients in the experimental group for home practice .

Ex Output:
progressive muscle relaxation training, PMRT


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

Ex Output:

not found