*2.4. Search Strategy*

An experienced medical librarian (NS) designed the Medline search and then translated that search for use in the other databases [27]. When available, a search limit to the English language was applied, as was a publication date limit of 1 December 2019 to 27 July 2020. The search strings consisted of natural language terms and (when available) controlled vocabulary representing the concepts of "COVID-19" and "psychological outcomes." A detailed search strategy can be found in Appendix A, Box A1.
