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.
Barra SN, Paiva LV, Providência R, Fernandes A, Leitão Marques A.Barra SN, et al.Emerg Med J. 2014 Apr;31(4):308-12. doi: 10.1136/emermed-2012-202089. Epub 2013 Jan 24.Emerg Med J. 2014.PMID: 23349355
Barra SN, Providência R.Barra SN, et al.Circ J. 2013;77(6):1642. doi: 10.1253/circj.cj-13-0189. Epub 2013 Mar 20.Circ J. 2013.PMID: 23514724No abstract available.