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.