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.
Harb R, Radwan E, Yan X, Abdel-Aty M.Harb R, et al. Among authors: yan x.Accid Anal Prev. 2007 Sep;39(5):1026-36. doi: 10.1016/j.aap.2007.01.007. Epub 2007 Mar 13.Accid Anal Prev. 2007.PMID: 17359926
Harb R, Yan X, Radwan E, Su X.Harb R, et al. Among authors: yan x.Accid Anal Prev. 2009 Jan;41(1):98-107. doi: 10.1016/j.aap.2008.09.009. Epub 2008 Nov 4.Accid Anal Prev. 2009.PMID: 19114143
Elmitiny N, Yan X, Radwan E, Russo C, Nashar D.Elmitiny N, et al. Among authors: yan x.Accid Anal Prev. 2010 Jan;42(1):101-11. doi: 10.1016/j.aap.2009.07.007. Epub 2009 Jul 31.Accid Anal Prev. 2010.PMID: 19887150