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.
Azab HA, El-Korashy SA, Anwar ZM, Khairy GM, Steiner MS, Duerkop A.Azab HA, et al. Among authors: duerkop a.Analyst. 2011 Nov 7;136(21):4492-9. doi: 10.1039/c1an15049a. Epub 2011 Sep 15.Analyst. 2011.PMID: 21918780