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.
Russell K, Eriksen M, Aaberge L, Wilhelmsen N, Skulstad H, Remme EW, Haugaa KH, Opdahl A, Fjeld JG, Gjesdal O, Edvardsen T, Smiseth OA.Russell K, et al. Among authors: aaberge l.Eur Heart J. 2012 Mar;33(6):724-33. doi: 10.1093/eurheartj/ehs016. Epub 2012 Feb 6.Eur Heart J. 2012.PMID: 22315346Free PMC article.