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.
Gold MR, Peters RW, Johnson JW, Shorofsky SR.Gold MR, et al.J Am Coll Cardiol. 1996 Nov 1;28(5):1278-82. doi: 10.1016/s0735-1097(96)00314-2.J Am Coll Cardiol. 1996.PMID: 8890827Free article.