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.
Baron-Hay S, Clifford A, Jackson M, Clarke S.Baron-Hay S, et al. Among authors: clarke s.Ann Oncol. 1999 Sep;10(9):1109-12. doi: 10.1023/a:1008388916920.Ann Oncol. 1999.PMID: 10572611Free article.Review.