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.
Li C, Nguyen Q, Ryan PH, Lemasters GK, Spitz H, Lobaugh M, Glover S, Grinshpun SA.Li C, et al.J Environ Monit. 2009 May;11(5):1037-42. doi: 10.1039/b819458k. Epub 2009 Feb 27.J Environ Monit. 2009.PMID: 19436862
Spitz H, Glover S, Liu N, Smith B, Hickman D, Kruchten D, Anderson L.Spitz H, et al.Health Phys. 1994 Jul;67(1):39-46. doi: 10.1097/00004032-199407000-00005.Health Phys. 1994.PMID: 8200800