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.
Engelhard MM, Schmidt KM, Engel CE, Brenton JN, Patek SD, Goldman MD.Engelhard MM, et al. Among authors: brenton jn.Qual Life Res. 2016 Dec;25(12):3221-3230. doi: 10.1007/s11136-016-1342-2. Epub 2016 Jun 24.Qual Life Res. 2016.PMID: 27342237