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.
Cardoso AT, Nanji L, Costa J, Vaz-Carneiro A.Cardoso AT, et al.Acta Med Port. 2014 Jul-Aug;27(4):411-3. Epub 2014 Aug 29.Acta Med Port. 2014.PMID: 25203945Free article.Review.Portuguese.