PubMed MEDLINE was developed by the National Center for Biotechnology Information (NCBI). It was developed in conjunction with publishers of biomedical literature as a search tool for accessing literature citations and linking to full-text journals at web sites of participating publishers.
CINAHL is the authoritative resource for nursing and allied health professionals, students, educators and researchers It provides indexing for over 1,200 nursing journals and publications dating back to 1982.
The Cochrane Library is a collection of databases that contain high-quality, independent evidence to inform healthcare decision-making. Includes Cochrane Database of Systematic Reviews and CENTRAL Register of Controlled Trials.