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.
Roos EM, Toksvig-Larsen S.Roos EM, et al.Health Qual Life Outcomes. 2003 May 25;1:17. doi: 10.1186/1477-7525-1-17.Health Qual Life Outcomes. 2003.PMID: 12801417Free PMC article.
Roos EM, Lohmander LS.Roos EM, et al.Health Qual Life Outcomes. 2003 Nov 3;1:64. doi: 10.1186/1477-7525-1-64.Health Qual Life Outcomes. 2003.PMID: 14613558Free PMC article.Review.