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Systematic Reviews for the Health Sciences: Grey Literature

What is Grey Literature?

The Fourth International Conference on Grey Literature (GL '99) in Washington, DC, in October 1999 defined grey literature as follows: "That which is produced on all levels of government, academics, business and industry in print and electronic formats, but which is not controlled by commercial publishers." - New York Academy of Medicine

Some examples:
Conference Proceedings
Government Documents
Dissertations
White Papers

Why Grey Literature?

From The Institute of Medicine:

STANDARD 3.2
Take action to address potentially biased reporting of research results.
3.2.1  
Search grey literature databases, clinical trial registries, and other sources of unpublished information about studies

Grey Lit Sources:

  • Institutional Repositories
  • Clinical Trial Registries
  • Drug Registries
  • Organizational Websites
  • Government (federal, state, and local)
  • International Organizations

Databases

Additional Grey Literature Resources

Additional Databases

Additional databases that may be available through an institution

  • Healthcare Management Information Consortium (HMIC) 
  • ProQuest Dissertations & Theses A&I (UIC)
  • PsycEXTRA

Search Engines/Portals

Other Library Guides on Gray Literature