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.
Lui TKS, Tsang SMH, Kwok AWL.Lui TKS, et al. Among authors: tsang smh.Int J Environ Res Public Health. 2018 May 16;15(5):1001. doi: 10.3390/ijerph15051001.Int J Environ Res Public Health. 2018.PMID: 29772741Free PMC article.
So BCL, Szeto GPY, Lau RWL, Dai J, Tsang SMH.So BCL, et al. Among authors: tsang smh.Int J Environ Res Public Health. 2019 Dec 9;16(24):5005. doi: 10.3390/ijerph16245005.Int J Environ Res Public Health. 2019.PMID: 31835387Free PMC article.