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.
Wang M, Birnkrant DJ, Super DM, Jacobs IB, Bahler RC.Wang M, et al. Among authors: bahler rc.Open Heart. 2018 Mar 3;5(1):e000783. doi: 10.1136/openhrt-2018-000783. eCollection 2018.Open Heart. 2018.PMID: 29531771Free PMC article.