Examples of grey literature include publications/reports/white papers from governments, academics, think tanks, organizations, business or industry, dissertations and theses, Conference abstracts, proceedings, policies & procedures, patents, pharmaceutical data, unpublished trial data.
Searching Grey Literature
Google Search: Using Google's site limit feature to find government or institution reports.
Example: searching for grey literature from government or education institution
Prenatal care AND telemedicine AND site:gov
prenatal care AND telemedicine AND site:edu
Selected Grey Literature Resources
Grey Literature Network Service: http://www.greynet.org/greysourceindex/documenttypes.html
Grey Literature Report www.greylit.org
Open Grey www.opengrey.eu
OSF https://help.osf.io/article/330-welcome-to-registrations
PROSPERO https://www.crd.york.ac.uk/prospero/
Registry of Open Access Repositories http://roar.eprints.org/
Registry of Research Data Repositories http://service.re3data.org
ClinicalTrials.gov https://clinicaltrials.gov/
ISRCTN registry http://www.isrctn.com/
WHO ICTRP http://www.who.int/ictrp/en/
BIOSIS Previews (UCSF only)
EMBASE (UCSF only)
Web of Science (UCSF only)
Dissertations and Theses
NDLTD Global ETD Search http://search.ndltd.org/index.php
Agency for Healthcare Research and Quality https://www.ahrq.gov/research/data/index.html
National Health Service (NHS) Centre for Reviews and Dissemination https://www.crd.york.ac.uk/CRDWeb/
National Institute for Health and Clinical Excellence (NICE),https://www.nice.org.uk/
Scottish Intercollegiate Guideline Network https://www.sign.ac.uk/
U.S. Preventive Services Task Force https://www.uspreventiveservicestaskforce.org
California Health Benefit Review Program: bill analysis https://chbrp.org/completed_analyses/index.php
HSRProj https://catalog.data.gov/dataset/health-services-research-projects-in-progress-hsrproj-dc510
HealthData.gov (beta) http://www.healthdata.gov/
National Center for Health Statistics http://www.cdc.gov/nchs/
Phpartners Health Data Tools & Statistics: Partners in Information Access for the Public Health Workforce https://healthdata.gov/dataset/Partners-in-Information-Access-for-the-Public-Heal/v3ib-u4vn
RAND Corporation http://www.rand.org/pubs.html
British Library http://explore.bl.uk/
National Technical Reports Library www.ntis.gov
Robert Wood Johnson Foundation www.rwjf.org/en.html
WorldCat http://www.worldcat.org/
The basis for this list is a handout from Ahlam Saleh, MD, MLIS related to Midday at the Oasis presentation August 2015.