Whats the Difference Between PubMed and Medline?
MEDLINE is the largest component of PubMed (http://pubmed.gov/), the freely accessible online database of biomedical journal citations and abstracts created by the U.S. National Library of Medicine (NLM®). Approximately 5,400 journals published in the United States and more than 80 other countries have been selected and are currently indexed for MEDLINE. A distinctive feature of MEDLINE is that the records are indexed with NLM’s controlled vocabulary, the Medical Subject Headings (MeSH®). In addition to MEDLINE citations, PubMed also contains: • In-process citations which provide a record for an article before it is indexed with MeSH and added to MEDLINE or converted to out-of-scope status. • Citations that precede the date that a journal was selected for MEDLINE indexing (when supplied electronically by the publisher). • Some OLDMEDLINE citations that have not yet been updated with current vocabulary and converted to MEDLINE status. • Citations to articles that are out-of-scope (e.g.,
