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.
Waters KM, Liu T, Quesenberry RD, Willse AR, Bandyopadhyay S, Kathmann LE, Weber TJ, Smith RD, Wiley HS, Thrall BD.Waters KM, et al. Among authors: weber tj.PLoS One. 2012;7(3):e34515. doi: 10.1371/journal.pone.0034515. Epub 2012 Mar 29.PLoS One. 2012.PMID: 22479638Free PMC article.