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.

Rheumatic fever is a preventable chronic disease preceded by group A beta-haemolytic streptococcal ( GABHS ) pharyngitis .
not found

Although collaborative care is effective for treating depression and other mental disorders in primary care , there have been no randomized trials of collaborative care specifically for patients with Posttraumatic stress disorder ( PTSD ) .
collaborative care

This difference was not significant .

not found