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.
Silveira PC, Victor EG, Schefer D, Silva LA, Streck EL, Paula MM, Pinho RA.Silveira PC, et al. Among authors: silva la.Ultrasound Med Biol. 2010 Jan;36(1):44-50. doi: 10.1016/j.ultrasmedbio.2009.09.001.Ultrasound Med Biol. 2010.PMID: 19900747Clinical Trial.