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.
Chang JS, Kushel M, Miaskowski C, Ceasar R, Zamora K, Hurstak E, Knight KR.Chang JS, et al. Among authors: knight kr.Subst Use Misuse. 2017 Jan 28;52(2):251-255. doi: 10.1080/10826084.2016.1223138. Epub 2016 Oct 18.Subst Use Misuse. 2017.PMID: 27754719Free PMC article.
Behar E, Bagnulo R, Knight K, Santos GM, Coffin PO.Behar E, et al. Among authors: knight k.PLoS One. 2020 Mar 25;15(3):e0230408. doi: 10.1371/journal.pone.0230408. eCollection 2020.PLoS One. 2020.PMID: 32210442Free PMC article.