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.
Nygård K, Schimmer B, Søbstad Ø, Walde A, Tveit I, Langeland N, Hausken T, Aavitsland P.Nygård K, et al. Among authors: langeland n.BMC Public Health. 2006 May 25;6:141. doi: 10.1186/1471-2458-6-141.BMC Public Health. 2006.PMID: 16725025Free PMC article.
Wensaas KA, Langeland N, Rørtveit G.Wensaas KA, et al. Among authors: langeland n.Tidsskr Nor Laegeforen. 2007 Sep 6;127(17):2222-5.Tidsskr Nor Laegeforen. 2007.PMID: 17828314Free article.Norwegian.
Wensaas KA, Langeland N, Rortveit G.Wensaas KA, et al. Among authors: langeland n.Scand J Prim Health Care. 2009;27(1):12-7. doi: 10.1080/02813430802602393.Scand J Prim Health Care. 2009.PMID: 19085428Free PMC article.