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.
du Plessis JB, van Rooyen JJ, Naude DA, van der Merwe CA.du Plessis JB, et al. Among authors: van rooyen jj.J Dent Assoc S Afr. 1995 Nov;50(11):545-9.J Dent Assoc S Afr. 1995.PMID: 8613580