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.
Khalsa SDS, Smart DR, Muhammad S, Armstrong CM, Sanden BL, Houlton BZ, Brown PH.Khalsa SDS, et al. Among authors: smart dr.Sci Total Environ. 2020 Jun 20;722:137889. doi: 10.1016/j.scitotenv.2020.137889. Epub 2020 Mar 12.Sci Total Environ. 2020.PMID: 32199384Free article.
Bloom AJ, Smart DR, Nguyen DT, Searles PS.Bloom AJ, et al. Among authors: smart dr.Proc Natl Acad Sci U S A. 2002 Feb 5;99(3):1730-5. doi: 10.1073/pnas.022627299. Epub 2002 Jan 29.Proc Natl Acad Sci U S A. 2002.PMID: 11818528Free PMC article.