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.
Helleberg KM, Hauge S.Helleberg KM, et al. Among authors: hauge s.Nurs Res Pract. 2014;2014:905972. doi: 10.1155/2014/905972. Epub 2014 Sep 30.Nurs Res Pract. 2014.PMID: 25349732Free PMC article.