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.
Wong JW, Ip M, Tang A, Wei VW, Wong SY, Riley S, Read JM, Kwok KO.Wong JW, et al. Among authors: tang a.Clin Epidemiol. 2018 Oct 12;10:1489-1501. doi: 10.2147/CLEP.S160595. eCollection 2018.Clin Epidemiol. 2018.PMID: 30349396Free PMC article.Review.
Kwok KO, Wan In W, Huang Y, Wong A, Tang A, Wong SYS.Kwok KO, et al. Among authors: tang a.Travel Med Infect Dis. 2022 Jan-Feb;45:102226. doi: 10.1016/j.tmaid.2021.102226. Epub 2021 Nov 30.Travel Med Infect Dis. 2022.PMID: 34861416Free PMC article.No abstract available.