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.
Kenney EL, Gortmaker SL, Carter JE, Howe MC, Reiner JF, Cradock AL.Kenney EL, et al. Among authors: howe mc.Am J Public Health. 2015 Sep;105(9):1777-83. doi: 10.2105/AJPH.2015.302645. Epub 2015 Jul 16.Am J Public Health. 2015.PMID: 26180950Free PMC article.Clinical Trial.