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.
Pouton CW, Haynes JM.Pouton CW, et al. Among authors: haynes jm.Adv Drug Deliv Rev. 2005 Dec 12;57(13):1918-34. doi: 10.1016/j.addr.2005.08.003. Epub 2005 Nov 9.Adv Drug Deliv Rev. 2005.PMID: 16290153Review.