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.
Rawat A, Joshi GK.Rawat A, et al. Among authors: joshi gk.Environ Monit Assess. 2019 Mar 14;191(4):218. doi: 10.1007/s10661-019-7369-4.Environ Monit Assess. 2019.PMID: 30874943