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.
Heeb JL, Gmel G.Heeb JL, et al. Among authors: gmel g.Subst Use Misuse. 2005;40(8):1015-33. doi: 10.1081/JA-200030718.Subst Use Misuse. 2005.PMID: 16040366