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.
Gupta H.Gupta H.J Environ Manage. 2018 Nov 15;226:201-216. doi: 10.1016/j.jenvman.2018.08.005. Epub 2018 Aug 13.J Environ Manage. 2018.PMID: 30119045Review.
Gupta H, Barua MK.Gupta H, et al.Sci Total Environ. 2018 Aug 15;633:122-139. doi: 10.1016/j.scitotenv.2018.03.173. Epub 2018 Mar 21.Sci Total Environ. 2018.PMID: 29573679