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.
Nagueh SF, Groves BM, Schwartz L, Smith KM, Wang A, Bach RG, Nielsen C, Leya F, Buergler JM, Rowe SK, Woo A, Maldonado YM, Spencer WH 3rd.Nagueh SF, et al.J Am Coll Cardiol. 2011 Nov 22;58(22):2322-8. doi: 10.1016/j.jacc.2011.06.073.J Am Coll Cardiol. 2011.PMID: 22093510Free article.