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]: Serum lactate levels were significantly high in 500 mg l⁻¹ group compared to control group .
[A]: not found


[Q]: At the end of 1 year 24 group 1 ( 92.3 % ) and 23 group 2 ( 90.3 % ) patients had an improved drainage pattern .
[A]: not found


[Q]: Serotonin is involved in both disorders , and selective serotonin reuptake inhibitors ( SSRIs ) can modulate cognitive flexibility and improve behavior in both disorders .
[A]:
not found