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.
Hamwey MK, Gargano LM, Friedman LG, Leon LF, Petrsoric LJ, Brackbill RM.Hamwey MK, et al.Int J Environ Res Public Health. 2020 Jun 17;17(12):4344. doi: 10.3390/ijerph17124344.Int J Environ Res Public Health. 2020.PMID: 32560511Free PMC article.Review.