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.
Pantalone DW, Bimbi DS, Holder CA, Golub SA, Parsons JT.Pantalone DW, et al. Among authors: parsons jt.Am J Public Health. 2010 Oct;100(10):1892-5. doi: 10.2105/AJPH.2009.175232. Epub 2010 Aug 19.Am J Public Health. 2010.PMID: 20724693Free PMC article.