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.

[Q]: Social skills improvement in children with high-functioning autism : a pilot randomized controlled trial .
[A]: not found


[Q]: 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 ) .
[A]: levamisole, placebo


[Q]: Patients in the experimental group received a brief note in which they were explicitly asked to increase both their physical activity level and time of sun exposure , while control group patients did not receive these explicit recommendations .
[A]:
physical activity, sun exposure