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.
Lei T, Siu KL, Kok KH, Chan KH, Chan EY, Hung IF, To KK, Li PC, Zhou J, Zheng BJ, Yuen KY, Wang M, Jin DY.Lei T, et al. Among authors: kok kh.Vaccine. 2012 Mar 30;30(16):2605-10. doi: 10.1016/j.vaccine.2012.02.009. Epub 2012 Feb 16.Vaccine. 2012.PMID: 22342549
Ng MH, Ho TH, Kok KH, Siu KL, Li J, Jin DY.Ng MH, et al. Among authors: kok kh.J Immunol. 2011 Dec 15;187(12):6473-82. doi: 10.4049/jimmunol.1100719. Epub 2011 Nov 11.J Immunol. 2011.PMID: 22079989