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.
Proctor A, Herrera-Loeza SG, Wang Q, Lawrence DS, Yeh JJ, Allbritton NL.Proctor A, et al. Among authors: allbritton nl.Anal Chem. 2014 May 6;86(9):4573-80. doi: 10.1021/ac500616q. Epub 2014 Apr 18.Anal Chem. 2014.PMID: 24716819Free PMC article.