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.
Li QQ, Xu JD, Wang WJ, Cao XX, Chen Q, Tang F, Chen ZQ, Liu XP, Xu ZD.Li QQ, et al.Clin Cancer Res. 2009 Apr 15;15(8):2657-65. doi: 10.1158/1078-0432.CCR-08-2372. Epub 2009 Mar 31.Clin Cancer Res. 2009.PMID: 19336515