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.
Paul CL, Redman S, Sanson-Fisher RW.Paul CL, et al.Aust N Z J Public Health. 1998 Feb;22(1):146-8. doi: 10.1111/j.1467-842x.1998.tb01160.x.Aust N Z J Public Health. 1998.PMID: 9599868Free article.
Newell SA, Sanson-Fisher RW, Savolainen NJ.Newell SA, et al.J Natl Cancer Inst. 2002 Apr 17;94(8):558-84. doi: 10.1093/jnci/94.8.558.J Natl Cancer Inst. 2002.PMID: 11959890