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:
In 78 children known to be infected with Ascaris at baseline , the rate of weight gain was 21 per cent greater in children treated with levamisole than in those receiving placebo ( p = .03 ) .

Ex Output:
levamisole, placebo


Ex Input:
Eligible patients were children and adolescents with HFA .

Ex Output:
not found


Ex Input:
Use of health care facilities was assessed from diaries/questionnaires and Medicare reimbursement rates used to estimate costs .

Ex Output:

not found