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Healthcare Innovation (MHI): Grey Literature Sources (Unpublished)

Unpublished Nursing Literature

Here are some helpful resources to assist you in finding grey (unpublished) literature in the health sciences.


New York Academy of Medicine Grey Literature Report - An independent organization since 1847, NYAM addresses the health challenges facing the world’s urban populations through interdisciplinary approaches to policy leadership, education, community engagement and innovative research. Drawing on the expertise of diverse partners worldwide and more than 2,000 elected Fellows from across the professions, our current priorities are to create environments in cities that support healthy aging; to strengthen systems that prevent disease and promote the public’s health; and to implement interventions that eliminate health disparities.

Blackhall, K. (2007). Finding studies for inclusion in systematic reviews of interventions for injury prevention: the importance of grey and unpublished literature. Injury Prevention, 13(5), 359.  Blackhall says there are six ways to search for grey literature: Cochrane Central Register of Controlled Trials; Hand searching; Databases of unpublished and ongoing studies; the Internet; Reference lists; and Subject experts.

Grey Literature Network Service - was founded in 1992. The goal of GreyNet is to facilitate dialog, research, and communication between persons and organisations in the field of grey literature. GreyNet further seeks to identify and distribute information on and about grey literature in networked environments. Its main activities include the International Conference Series on Grey Literature, the creation and maintenance of web-based resources, a moderated Listserv, a combined Distribution List, The Grey Journal (TGJ), as well as curriculum development in the field of grey literature.

Mednar -  A free, publicly available deep web search engine that uses advanced federated search technology to return high quality results by submitting your search query – in real-time – to other well respected search engines. Mednar then collates, ranks and drops duplicates of the results.

Health Sciences Online (HSO) -  is the first website to deliver authoritative, comprehensive, free, and ad-free health sciences knowledge. Search and browse any health sciences topic from over 50,000 courses, references, guidelines, and other learning resources. Materials are selected from accredited educational sources including universities, governments, and professional societies.

In the Sciences:

Scirus - is the most comprehensive scientific research tool on the web. With over 410 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists’ homepages, courseware, pre-print server material, patents and institutional repository and website information.

World Wide Science.org - is a global science gateway—accelerating scientific discovery and progress through a multilateral partnership to enable federated searching of national and international scientific databases and portals.

Vadlo - grey literature PowerPoint database, Biomedical and Life Sciences Search Engine. Search under unpublished nursing literature.

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