Data management 
Data were managed using Microsoft Excel and plain text files stored in Microsoft SharePoint for easy access. The search hits (including publication title, authors, abstract and DOI) were downloaded in .csv, .txt or .xlsx format, depending on the database options. A file containing all hits for each search was stored in Microsoft’s SharePoint. Search hits from different databases were merged and duplications were removed, non-experimental records were excluded, resulting in one file prepared for the screening of the search hits for experimental studies only (n=12113).