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.
Straftis AA, Gray PB.Straftis AA, et al. Among authors: gray pb.Int J Environ Res Public Health. 2019 Sep 5;16(18):3261. doi: 10.3390/ijerph16183261.Int J Environ Res Public Health. 2019.PMID: 31491933Free PMC article.