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.
Stone AM, Merlo LJ.Stone AM, et al. Among authors: merlo lj.Am J Drug Alcohol Abuse. 2012 Jul;38(4):314-21. doi: 10.3109/00952990.2011.643992. Epub 2012 Jan 13.Am J Drug Alcohol Abuse. 2012.PMID: 22681334