3Wolfe F, Mitchell DM, Sibley JT, et al. The morality of rheumatoid arthritis. Arthritis Rheum, 1994,37: 481-494.
4Martens PB, Pillemer SR, Jacobsson LT, et al. Survivorship in a population based cohort of patients with Sjogren′ s syndrome,1976-1992. J Rheumatol, 1999, 26: 1296-1300.
5Sokka T, Motonen T, Hamonen P. Mortality in early ″sawtooth″treated rheumatoid arthritis patients during the first 8-14 years.Scand J Rheumatol, 1999, 28: 282-287.
6Keysor J, Sokka T, Krishnan E, et al. Patient questionnaires and formal education level as prospective predictors of mortality over 10 years in 97% of 1416 patients with rheumatoid arthritis from 15 United States private practices. J Rheumatol, 2004, 31:
7Neva MH, Myllykangas R, Kautiainen H, et al. Mortality associated with cervical spine disorders:a population-based study of 1666 patients with rheumatoid arthritis who died in Finland in 1989. Rheumatology (Oxford), 2001, 40: 123-127.
8Thomas E, Symmons DP, Brewster DH, et al. National study of causespecific mortality in rheumatoid arthritis, juvenile chronic arthritis, and other rheumatic conditions: a 20 year followup study. J Rheumatol, 2003, 30: 958-965.
9Mau W, Zeidler H. Follow-up and prognosis in chronic polyarthritis. Versicherungsmedizin, 1999, 51:115-121.
10Turesson C, Jacobsson L, Bergstrom U. Extra-articular rheumatoid arthritis: prevalence and mortality. Rheumatology (Oxford),1999, 38: 668-674.