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.
McNally AM, Palfai TP.McNally AM, et al. Among authors: palfai tp.J Drug Educ. 2003;33(2):159-76. doi: 10.2190/82CT-LRC5-AMTW-C090.J Drug Educ. 2003.PMID: 12929707