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.
Wright N, Oldham N, Jones L.Wright N, et al.Drug Alcohol Rev. 2005 May;24(3):245-51. doi: 10.1080/09595230500170308.Drug Alcohol Rev. 2005.PMID: 16096128
Wright N, Oldham N, Francis K, Jones L.Wright N, et al.Subst Abuse Treat Prev Policy. 2006 Oct 2;1:28. doi: 10.1186/1747-597X-1-28.Subst Abuse Treat Prev Policy. 2006.PMID: 17014725Free PMC article.