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.
Chen H, Liu P, Lu JJ, Behzadi B.Chen H, et al. Among authors: liu p.Accid Anal Prev. 2009 May;41(3):543-51. doi: 10.1016/j.aap.2009.01.016. Epub 2009 Feb 26.Accid Anal Prev. 2009.PMID: 19393805
Li Z, Liu P, Wang W, Xu C.Li Z, et al. Among authors: liu p.Accid Anal Prev. 2012 Mar;45:478-86. doi: 10.1016/j.aap.2011.08.016. Epub 2011 Sep 21.Accid Anal Prev. 2012.PMID: 22269532
Xu C, Liu P, Wang W, Li Z.Xu C, et al. Among authors: liu p.Accid Anal Prev. 2012 Jul;47:162-71. doi: 10.1016/j.aap.2012.01.020. Epub 2012 Feb 4.Accid Anal Prev. 2012.PMID: 22405245
Xu C, Wang W, Liu P.Xu C, et al. Among authors: liu p.J Safety Res. 2013 Sep;46:135-44. doi: 10.1016/j.jsr.2013.04.007. Epub 2013 Jun 14.J Safety Res. 2013.PMID: 23932695
Li Z, Wang W, Chen R, Liu P, Xu C.Li Z, et al. Among authors: liu p.Traffic Inj Prev. 2013;14(8):861-6. doi: 10.1080/15389588.2013.775433.Traffic Inj Prev. 2013.PMID: 24073775
Zhang X, Liu P, Chen Y, Bai L, Wang W.Zhang X, et al. Among authors: liu p.Traffic Inj Prev. 2014;15(6):645-51. doi: 10.1080/15389588.2013.860526.Traffic Inj Prev. 2014.PMID: 24215633
Yu H, Liu P, Chen J, Wang H.Yu H, et al. Among authors: liu p.Accid Anal Prev. 2014 May;66:80-8. doi: 10.1016/j.aap.2014.01.017. Epub 2014 Jan 29.Accid Anal Prev. 2014.PMID: 24530515