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The U.S. National Library of Medicine has been working on a new version of PubMed since March 2019. The new version of PubMed is available at https://pubmed.ncbi.nlm.nih.gov/ and it will become the default homepage in spring 2020. Updated features include:
More information about the new PubMed can be found at https://www.nlm.nih.gov/pubs/techbull/nd19/nd19_pubmed_new.html.