Screening process and study selection
There were no restrictions on the article’s publication date, but only
studies written in English were selected. Searchers were performed by
one of the authors. All potentially English relevant articles retrieved
from each database were screened. Two reviewers independently reviewed
titles and abstracts and chose articles fitting selection criteria for
full-text evaluation. Discrepancies were discussed with a third
reviewer. Irrelevant articles were excluded. Based on inclusion and
exclusion criteria and full-text assessment, eligible studies were
identified. Then the content was analyzed, and data were extracted
(Figure 1).