Articles:

PubMed Central: New Journals Participating and New Content Added - e2-

New journals participating and content from already participating journals has been added.
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Additional Grant Number Information from the United Kingdom - e3-

Eight United Kingdom granting agencies may appear on records from manuscripts that designate financial support.
[Article updated on December 08, 2011]
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Black and White MeSH® Discontinued - e4-

Printable PDF will be available.
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