2.3. Search strategy
The search strategy obtained relevant studies from MEDLINE (accessed via
PubMed), EMBASE (accessed via embase.com), and CENTRAL up to March 2022.
We combined text words and controlled vocabulary from the databases,
without placing limits on the year of publication or language (see
supplementary material for the complete search criteria), and we
completed the search by checking the list of references from relevant
studies. The search results were placed in a database to coordinate
eligibility assessments, which was completed by two authors
independently who discussed any disagreements with the other authors.