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.
Chiu IS, Chu SH, Wang JK, Wu MH, Chen MR, Cheng CF, Hung CR.Chiu IS, et al. Among authors: cheng cf.J Am Coll Cardiol. 1995 Jul;26(1):250-8. doi: 10.1016/0735-1097(95)00187-5.J Am Coll Cardiol. 1995.PMID: 7797758Free article.