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.
Ruocco NA Jr, Bergelson BA, Jacobs AK, Frederick MM, Faxon DP, Ryan TJ.Ruocco NA Jr, et al. Among authors: bergelson ba.J Am Coll Cardiol. 1992 Dec;20(7):1445-51. doi: 10.1016/0735-1097(92)90435-p.J Am Coll Cardiol. 1992.PMID: 1452916Free article.Clinical Trial.