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.
Aderka D, Wysenbeek A, Engelmann H, Cope AP, Brennan F, Molad Y, Hornik V, Levo Y, Maini RN, Feldmann M, et al.Aderka D, et al. Among authors: cope ap.Arthritis Rheum. 1993 Aug;36(8):1111-20. doi: 10.1002/art.1780360812.Arthritis Rheum. 1993.PMID: 8393677
Cope AP, Jones A, Brozovic M, Shafi MS, Maini RN.Cope AP, et al.Ann Rheum Dis. 1992 Jun;51(6):803-4. doi: 10.1136/ard.51.6.803.Ann Rheum Dis. 1992.PMID: 1616368Free PMC article.