An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Weiskopf NG, Weng C.Weiskopf NG, et al. Among authors: weng c.J Am Med Inform Assoc. 2013 Jan 1;20(1):144-51. doi: 10.1136/amiajnl-2011-000681. Epub 2012 Jun 25.J Am Med Inform Assoc. 2013.PMID: 22733976Free PMC article.Review.