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.
Hung MC, Ekwueme DU, White A, Rim SH, King JB, Wang JD, Chang SH.Hung MC, et al. Among authors: chang sh.Prev Med. 2018 Jan;106:38-44. doi: 10.1016/j.ypmed.2017.09.022. Epub 2017 Sep 28.Prev Med. 2018.PMID: 28964854Free PMC article.