PubMed is the free, web-based interface for searching MEDLINE.
- Developed and maintained by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM)
- Contains over 30 million citations and abstracts from the biomedical journal literature, including the fields of medicine, nursing, dentistry, veterinary medicine, and health care systems
- Coverage dates back to 1946
- Does not include meeting abstracts, conference proceedings, dissertations, patents, or websites
