National Library of Medicine
U.S. National Library of Medicine
Write to the Help Desk
NLM Support Center
What can we help you with?
What is the difference between PubMed Central (PMC) and PubMed?
Who provides content to PMC and how do I find out if my journal of interest fully participates in PMC?
What happens if a journal ceases its participation in PubMed Central (PMC)? Will the existing articles be removed?
What is the PMC Open Access subset? Isn't everything in PMC open access?
Can I download a batch of articles from PMC for text mining or other purposes?
Which agencies and organizations name PMC as the repository for their funded research?
How do I obtain the full text of an article?
How do I subscribe to PubMed so that I can access PubMed articles?
Why don't I see the 'Results by year' graph on my PubMed search results page?
How can I get an alert when a new article of my interest has been added to PubMed?
Why don't I find all of my publications when I search your database?
How do I determine who to contact to obtain permission for reproducing either a portion of or an entire PMC article?
I have published under different author names. Can you link all of my articles?
How does the PubMed Best Match feature work?
How are journals selected for MEDLINE?
Why was PubMed's Automatic Term Mapping changed?
What is a versioned article cited in MEDLINE/PubMed?
How can I search PubMed by author?
Can articles supported by NIH grant funds meet the NIH Public Access Policy by submitting content to a third-party repository?
I found an error or mistake in PubMed; how do I get it fixed?
Are journals ever deselected from MEDLINE?
Where do I report problems with links for free full text articles?
Can I limit a search to articles that have full text or free full text available?
Why am I being asked to sign in to access this free article?
How do I find a list of journals in PubMed?
What if I can’t access Google accounts from my library?
Is Gmail required for using DOCLINE?
Can Google accounts be shared or does everyone need their own Google account?
Will my third-party ILL system (CLIO, ILLiad, QuickDOC, Relais, Tipasa) work with the new DOCLINE? What are the plans for integrating DOCLINE with other ILL systems?
Indexing & Cataloging