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.
Hervig T, Tvedt THA, Knoop T, Sandnes M, Reikvam H.Hervig T, et al. Among authors: knoop t.Tidsskr Nor Laegeforen. 2021 Nov 8;141(16). doi: 10.4045/tidsskr.21.0171. Print 2021 Nov 9.Tidsskr Nor Laegeforen. 2021.PMID: 34758596Free article.Norwegian.