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.
Lee JGL, Richardson A, Golden SD, Ribisl KM.Lee JGL, et al. Among authors: richardson a.Nicotine Tob Res. 2017 Oct 1;19(10):1243-1247. doi: 10.1093/ntr/ntw226.Nicotine Tob Res. 2017.PMID: 27613947Free PMC article.
Cohn A, Villanti A, Richardson A, Rath JM, Williams V, Stanton C, Mermelstein R.Cohn A, et al. Among authors: richardson a.Addict Behav. 2015 Sep;48:79-88. doi: 10.1016/j.addbeh.2015.02.005. Epub 2015 Apr 11.Addict Behav. 2015.PMID: 26042613