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.
Korb A, Tohidast-Akrad M, Cetin E, Axmann R, Smolen J, Schett G.Korb A, et al. Among authors: schett g.Arthritis Rheum. 2006 Sep;54(9):2745-56. doi: 10.1002/art.22080.Arthritis Rheum. 2006.PMID: 16947383Free article.