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.
Rychik J, Ayres N, Cuneo B, Gotteiner N, Hornberger L, Spevak PJ, Van Der Veld M.Rychik J, et al. Among authors: hornberger l.J Am Soc Echocardiogr. 2004 Jul;17(7):803-10. doi: 10.1016/j.echo.2004.04.011.J Am Soc Echocardiogr. 2004.PMID: 15220910No abstract available.
Moon-Grady A, Shahanavaz S, Brook M, Rodriguez H, Hornberger LK.Moon-Grady A, et al.J Am Soc Echocardiogr. 2012 Dec;25(12):1342-52. doi: 10.1016/j.echo.2012.09.003. Epub 2012 Oct 16.J Am Soc Echocardiogr. 2012.PMID: 23084470