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.
Eriksen SA, Prietzel H, Ibsen JR, Lauritsen MB, Vestergaard P, Telléus GK.Eriksen SA, et al. Among authors: vestergaard p.Dan Med J. 2014 Nov;61(11):A4940.Dan Med J. 2014.PMID: 25370958Free article.