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.
Fosså SD, Dahl AA, Langhammer A, Weedon-Fekjær H.Fosså SD, et al.BMC Res Notes. 2015 Nov 5;8:649. doi: 10.1186/s13104-015-1635-5.BMC Res Notes. 2015.PMID: 26541408Free PMC article.
Møller B, Weedon-Fekjaer H, Haldorsen T.Møller B, et al.BMC Med Res Methodol. 2005 Jun 10;5:21. doi: 10.1186/1471-2288-5-21.BMC Med Res Methodol. 2005.PMID: 15949034Free PMC article.