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.
Smalley W, Shatin D, Wysowski DK, Gurwitz J, Andrade SE, Goodman M, Chan KA, Platt R, Schech SD, Ray WA.Smalley W, et al.JAMA. 2000 Dec 20;284(23):3036-9. doi: 10.1001/jama.284.23.3036.JAMA. 2000.PMID: 11122591
Rogers SO, Ray WA, Smalley WE.Rogers SO, et al.Cancer Causes Control. 2004 Mar;15(2):193-9. doi: 10.1023/B:CACO.0000019511.67989.09.Cancer Causes Control. 2004.PMID: 15017132