Specialized literature in health sciences, including clinical research and healthcare. It includes the Cochrane database of systematic reviews, and databases of clinical trials, and non-Cochrane systematic reviews.
A searchable database, run by the National Library of Medicine, of privately and publicly funded clinical studies conducted around the world.
Grey Literature primarily refers to scholarly, scientific or government materials not controlled by commercial publishing. They include documents like government reports, dissertations, non-commercially published conference papers, working papers, standards, and guidelines.