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 Q]: Thus , this study investigates shared and disorder-specific brain dysfunctions in these 2 disorders during reward reversal , and the acute effects of an SSRI on these .
[EX A]: SSRI

[EX Q]: Once-daily amoxicillin versus twice-daily penicillin V in group A beta-haemolytic streptococcal pharyngitis .
[EX A]: amoxicillin, penicillin

[EX Q]: The question of whether abstinence during the months following a planned quit attempt exacerbates or improves depressive symptoms is an important clinical issue .
[EX A]:
not found