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.
Ebbert JO, Croghan IT, North F, Schroeder DR.Ebbert JO, et al. Among authors: north f.Nicotine Tob Res. 2010 Oct;12(10):1037-40. doi: 10.1093/ntr/ntq134. Epub 2010 Aug 19.Nicotine Tob Res. 2010.PMID: 20724382Free PMC article.Clinical Trial.
North F, Varkey P, Laing B, Cha SS, Tulledge-Scheitel S.North F, et al.Telemed J E Health. 2011 Jan-Feb;17(1):19-24. doi: 10.1089/tmj.2010.0120. Epub 2011 Jan 7.Telemed J E Health. 2011.PMID: 21214306