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.
Vollmers HP, Brändlein S.Vollmers HP, et al. Among authors: brandlein s.Adv Drug Deliv Rev. 2006 Aug 7;58(5-6):755-65. doi: 10.1016/j.addr.2005.08.007. Epub 2006 May 20.Adv Drug Deliv Rev. 2006.PMID: 16820243Review.