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.
Christian WJ, Valvi NR, Walker CJ.Christian WJ, et al. Among authors: walker cj.South Med J. 2023 Mar;116(3):326-331. doi: 10.14423/SMJ.0000000000001529.South Med J. 2023.PMID: 36863057
Walker CJ, Christian WJ.Walker CJ, et al.Subst Use Misuse. 2021;56(3):353-358. doi: 10.1080/10826084.2020.1868002. Epub 2021 Jan 17.Subst Use Misuse. 2021.PMID: 33459123Free article.
Christian WJ, Walker CJ, Huang B, Hahn EJ.Christian WJ, et al. Among authors: walker cj.South Med J. 2019 Jul;112(7):369-375. doi: 10.14423/SMJ.0000000000001000.South Med J. 2019.PMID: 31282965Free PMC article.