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.
Chaffee BW, Couch ET, Urata J, Gansky SA, Essex G, Cheng J.Chaffee BW, et al. Among authors: cheng j.Subst Use Misuse. 2019;54(7):1154-1166. doi: 10.1080/10826084.2018.1564330. Epub 2019 Jan 29.Subst Use Misuse. 2019.PMID: 30694094Free PMC article.
Chaffee BW, Werts M, White JS, Couch ET, Urata J, Cheng J, Kearns C.Chaffee BW, et al. Among authors: cheng j.Am J Health Promot. 2021 May;35(4):525-532. doi: 10.1177/0890117120969057. Epub 2020 Oct 28.Am J Health Promot. 2021.PMID: 33111530Free PMC article.