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.
Ho E, Coyte PC, Bombardier C, Hawker G, Wright JG.Ho E, et al. Among authors: hawker g.J Rheumatol. 1994 Nov;21(11):2101-5.J Rheumatol. 1994.PMID: 7869317
Katz BP, Freund DA, Heck DA, Dittus RS, Paul JE, Wright J, Coyte P, Holleman E, Hawker G.Katz BP, et al. Among authors: hawker g.Health Serv Res. 1996 Jun;31(2):125-40.Health Serv Res. 1996.PMID: 8675435Free PMC article.