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.
Griggs JL, Su XQ, Mathai ML.Griggs JL, et al.N Am J Med Sci. 2015 Nov;7(11):509-16. doi: 10.4103/1947-2714.170611.N Am J Med Sci. 2015.PMID: 26713299Free PMC article.
Griggs JL, Thomas DJ, Fry R, Bradham KD.Griggs JL, et al.J Toxicol Environ Health B Crit Rev. 2021 Oct 3;24(7):307-324. doi: 10.1080/10937404.2021.1934764. Epub 2021 Jun 6.J Toxicol Environ Health B Crit Rev. 2021.PMID: 34092204Free PMC article.Review.