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.
Head J, Johnston SR.Head J, et al. Among authors: johnston sr.Breast Cancer Res. 2004;6(6):262-8. doi: 10.1186/bcr947. Epub 2004 Oct 6.Breast Cancer Res. 2004.PMID: 15535857Free PMC article.Review.
Johnston SR, Martin LA, Dowsett M.Johnston SR, et al.Breast Cancer Res Treat. 2005;93 Suppl 1:S19-25. doi: 10.1007/s10549-005-9038-2.Breast Cancer Res Treat. 2005.PMID: 16247596Review.