It is a product of the National Center for Biotechnology Information (NCBI), at the U.S. National Library of Medicine (NLM), part of the National Institutes of Health (NIH). PubMed is built on the NLM's long history of indexing and providing researchers access to the nation's biomedical literature.
PubMed itself does not contain the full text of an article, but in most cases each article will include a link to the full text, either in PubMed Central or on the publisher's website if the article publisher has an embargo (a period of time before an item becomes available).
If an article citation includes an abstract but not the full text, look for the article title in the Library search bar or search for the journal in the Journal Finder to see if Stevens subscribes to it.
The database was created in 1996 and now contains more than 36 million references, primarily from the following components:
There is so much to use in PubMed that creating an account can help you keep track of it all. Log into My NCBI through Stevens (find it on the list of partner organizations) or use another third party vendor. You can also link multiple accounts to your My NCBI profile.
PubMed's search functionalities are so strong because the database automatically incorporates the search strategies we typically recommend (such as those on the Search Better guide).
PubMed's algorithm understands a lot from a basic keyword search, and can also extrapolate citation information from an author name, article title, or journal title.
To see how PubMed has conducted the searches from your keywords, look for the Search History in the Advanced Search link.
If you can't find full-text of an article through PubMed, you might be able to find it through Library database subscriptions.