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.
Woolf SH, Krist AH, Johnson RE, Wilson DB, Rothemich SF, Norman GJ, Devers KJ.Woolf SH, et al. Among authors: rothemich sf.Ann Fam Med. 2006 Mar-Apr;4(2):148-52. doi: 10.1370/afm.522.Ann Fam Med. 2006.PMID: 16569718Free PMC article.