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.
Goldbaum M, Gianini RJ, Novaes HM, César CL.Goldbaum M, et al. Among authors: cesar cl.Rev Saude Publica. 2005 Feb;39(1):90-9. doi: 10.1590/s0034-89102005000100012. Epub 2005 Jan 11.Rev Saude Publica. 2005.PMID: 15654465Free article.Portuguese.