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.
Saraiva J, Oliveira SM, Rocha-Sousa A, Leite-Moreira A.Saraiva J, et al.Rev Port Cardiol. 2004 Oct;23(10):1317-33.Rev Port Cardiol. 2004.PMID: 15641296Review.English, Portuguese.
Saraiva J, Ribeiro C, Melo M, Gomes L, Costa G, Carrilho F.Saraiva J, et al.Acta Med Port. 2013 Sep-Oct;26(5):578-82. Epub 2013 Oct 31.Acta Med Port. 2013.PMID: 24192098Free article.