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.
Cho E, Giovannucci EL, Joh HK.Cho E, et al. Among authors: giovannucci el.Cancer Causes Control. 2013 Feb;24(2):373-82. doi: 10.1007/s10552-012-0123-7. Epub 2012 Dec 15.Cancer Causes Control. 2013.PMID: 23242637Free PMC article.