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.
Barry JJ, Silva MM, Popov VK, Shakesheff KM, Howdle SM.Barry JJ, et al. Among authors: popov vk.Philos Trans A Math Phys Eng Sci. 2006 Jan 15;364(1838):249-61. doi: 10.1098/rsta.2005.1687.Philos Trans A Math Phys Eng Sci. 2006.PMID: 17464360Free PMC article.Review.