Search outcome
The initial search strategy generated 959 articles (Fig. 1). The screening of titles and abstracts and the elimination of duplicate articles resulted in 45 articles. Each article was read and evaluated. Ultimately, 22 articles were relevant to the research question and underwent appraisal. These studies were independently assessedby two reviewers (TBH, MV) and, in the case of discrepancies, a consensus was reached by discussion.