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.
Botvin GJ, Griffin KW, Diaz T, Miller N, Ifill-Williams M.Botvin GJ, et al.J Am Med Womens Assoc (1972). 1999 Summer;54(3):139-43, 152.J Am Med Womens Assoc (1972). 1999.PMID: 10441920Clinical Trial.