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.
Yashiro M, Chung YS, Sowa M.Yashiro M, et al.Jpn J Cancer Res. 1994 Sep;85(9):883-6. doi: 10.1111/j.1349-7006.1994.tb02963.x.Jpn J Cancer Res. 1994.PMID: 7961114Free PMC article.