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.
Lee CS, Muthusamy A, Abdul-Rahman PS, Bhavanandan VP, Hashim OH.Lee CS, et al.Analyst. 2013 Jun 21;138(12):3522-9. doi: 10.1039/c3an36258b. Epub 2013 May 13.Analyst. 2013.PMID: 23665615Free article.