What is 'grey literature'? Documents that are not published through traditional commercial channels. It includes reports, conference papers, dissertations, technical & other trade papers and documents in repositories.
DARE contains abstracts of quality assessed systematic reviews and details of all Cochrane reviews and protocols.
NHS EED contains abstracts of quality assessed economic evaluations.
DARE and NHS EED include details of abstracts in the process of being written and these can be 'fast-tracked' on request.
HTA brings together details of completed and ongoing health technology assessments from around the world.