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.
Hou YH, Chen J, Tong GZ, Tian ZJ, Zhou YJ, Li GX, Li X, Peng JM, An TQ, Yang HC.Hou YH, et al. Among authors: chen j.Vaccine. 2008 Mar 10;26(11):1438-49. doi: 10.1016/j.vaccine.2007.12.057. Epub 2008 Jan 28.Vaccine. 2008.PMID: 18262692
Du L, Chen J, Hou L, Yu X, Zheng Q, Hou J.Du L, et al. Among authors: chen j.Vaccine. 2017 Dec 18;35(51):7088-7094. doi: 10.1016/j.vaccine.2017.10.094. Epub 2017 Nov 9.Vaccine. 2017.PMID: 29129452
Jiao H, Yang H, Zhao D, Chen J, Zhang Q, Liang J, Yin Y, Kong G, Li G.Jiao H, et al. Among authors: chen j.Vaccine. 2018 Jul 16;36(30):4532-4539. doi: 10.1016/j.vaccine.2018.06.006. Epub 2018 Jun 18.Vaccine. 2018.PMID: 29914847