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.
Monaghan PJ, Brown HA, Houghton LA, Keevil BG.Monaghan PJ, et al. Among authors: houghton la.J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Jul 15;877(22):2163-7. doi: 10.1016/j.jchromb.2009.05.045. Epub 2009 May 29.J Chromatogr B Analyt Technol Biomed Life Sci. 2009.PMID: 19520623
Atkinson W, Lockhart SJ, Houghton LA, Keevil BG.Atkinson W, et al. Among authors: houghton la.J Chromatogr B Analyt Technol Biomed Life Sci. 2006 Feb 17;832(1):173-6. doi: 10.1016/j.jchromb.2005.12.038. Epub 2006 Jan 24.J Chromatogr B Analyt Technol Biomed Life Sci. 2006.PMID: 16442351