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.
Kimmel CA, Trammell C.Kimmel CA, et al. Among authors: trammell c.Stain Technol. 1981 Sep;56(5):271-3. doi: 10.3109/10520298109067325.Stain Technol. 1981.PMID: 6171056