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.
Boston DW, Jefferies SR.Boston DW, et al. Among authors: jefferies sr.J Biomed Mater Res B Appl Biomater. 2010 Feb;92(2):456-61. doi: 10.1002/jbm.b.31536.J Biomed Mater Res B Appl Biomater. 2010.PMID: 19927338