In evidence synthesis projects, grey literature is used to refer to any sources that are not published in traditional scholarly journals. These would include sources like:
- clinical trials
- conference proceedings, abstracts, posters or presentations
- preprints
- professional association websites
- government reports
- social media posts
- interviews
- grant proposals
- theses and dissertations
If you'd like to find more information about grey literature sources and where to look to find them, check out our Where to Search page on our Systematic Review, Scoping Review & Other Evidence Synthesis Project guide.
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