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.
Daniel MM, Lorenzi MC, da Costa Leite C, Lorenzi-Filho G.Daniel MM, et al.Clinics (Sao Paulo). 2007 Feb;62(1):5-10. doi: 10.1590/s1807-59322007000100002.Clinics (Sao Paulo). 2007.PMID: 17334543Free article.