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.
Plum A, Knies G.Plum A, et al. Among authors: knies g.PLoS One. 2019 Nov 13;14(11):e0224290. doi: 10.1371/journal.pone.0224290. eCollection 2019.PLoS One. 2019.PMID: 31721776Free PMC article.
Knies G, Burton J, Sala E.Knies G, et al.BMC Health Serv Res. 2012 Mar 5;12:52. doi: 10.1186/1472-6963-12-52.BMC Health Serv Res. 2012.PMID: 22390416Free PMC article.
Knies G, Burton J.Knies G, et al.BMC Med Res Methodol. 2014 Nov 27;14:125. doi: 10.1186/1471-2288-14-125.BMC Med Res Methodol. 2014.PMID: 25430545Free PMC article.