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.
Robbins RJ, Bean SR.Robbins RJ, et al. Among authors: bean sr.J Chromatogr A. 2004 Jun 4;1038(1-2):97-105. doi: 10.1016/j.chroma.2004.03.009.J Chromatogr A. 2004.PMID: 15233525
Blackwell DL, Bean SR.Blackwell DL, et al. Among authors: bean sr.J Chromatogr A. 2012 Mar 23;1230:48-53. doi: 10.1016/j.chroma.2012.01.063. Epub 2012 Jan 30.J Chromatogr A. 2012.PMID: 22333682
Tilley M, Bean SR, Tilley KA.Tilley M, et al. Among authors: bean sr.J Chromatogr A. 2006 Jan 27;1103(2):368-71. doi: 10.1016/j.chroma.2005.12.029. Epub 2005 Dec 27.J Chromatogr A. 2006.PMID: 16384575