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.
Mathiasen AB, Jørgensen E, Qayyum AA, Haack-Sørensen M, Ekblond A, Kastrup J.Mathiasen AB, et al. Among authors: ekblond a.Am Heart J. 2012 Sep;164(3):285-91. doi: 10.1016/j.ahj.2012.05.026.Am Heart J. 2012.PMID: 22980293Clinical Trial.