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.
Willens HJ, Chirinos JA, Gómez-Marin O, Hare JM, de Marchena E.Willens HJ, et al. Among authors: chirinos ja.Ethn Dis. 2008 Winter;18(1):48-52.Ethn Dis. 2008.PMID: 18447099