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.
Hofer E, Reis CM, Hofer CB.Hofer E, et al. Among authors: hofer cb.Rev Soc Bras Med Trop. 2006 Jan-Feb;39(1):32-7. doi: 10.1590/s0037-86822006000100006. Epub 2006 Feb 23.Rev Soc Bras Med Trop. 2006.PMID: 16501763Free article.Portuguese.