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.
Girod SC, Pape HD, Krueger GR.Girod SC, et al.Eur J Cancer B Oral Oncol. 1994 Nov;30B(6):419-23. doi: 10.1016/0964-1955(94)90023-x.Eur J Cancer B Oral Oncol. 1994.PMID: 7719225