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.
Dong X, Cao X, Jiang W, Song X, Yu Z, Yu S.Dong X, et al. Among authors: song x.J Environ Sci (China). 2021 Aug;106:76-82. doi: 10.1016/j.jes.2021.01.008. Epub 2021 Jan 27.J Environ Sci (China). 2021.PMID: 34210441
Li Y, Yu Z, Song X, Mu Q.Li Y, et al. Among authors: song x.Environ Monit Assess. 2006 Oct;121(1-3):491-501. doi: 10.1007/s10661-005-9149-6. Epub 2006 Jun 1.Environ Monit Assess. 2006.PMID: 16738770