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.
Zhang X, Liu Z, Zhao Q, Chang H, Xie Q.Zhang X, et al. Among authors: chang h.Sci China C Life Sci. 2004 Feb;47(1):74-81. doi: 10.1360/02yc0169.Sci China C Life Sci. 2004.PMID: 15382679
Du J, Chang H, Cong G, Shao J, Lin T, Shang Y, Liu Z, Liu X, Cai X, Xie Q.Du J, et al. Among authors: chang h.Virus Genes. 2007 Dec;35(3):635-42. doi: 10.1007/s11262-007-0126-8. Epub 2007 Jul 6.Virus Genes. 2007.PMID: 17619135
Lin T, Chang HY, DU HF, Shao JJ, DU JZ, Cong GZ.Lin T, et al.Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2007 Nov;23(11):1034-7.Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2007.PMID: 17988586Chinese.
Du JZ, Gao SD, Chang HY, Cong GZ, Lin T, Shao JJ, Liu XT, Cai XP.Du JZ, et al.Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2008 Apr;24(4):358-61.Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2008.PMID: 18394343Chinese.