1. New Engl;COBB, S.; ANDERSON, F.; BAUER, W.;J. Med; Length of life and cause of death in rheumatoid arthritis,1953
2. Ann;GOLDFINE, L.J.; STEVENS, M.B.; MAIS, A.T.; SHULMAN, L.E.;rheum. Dis; Clinical significance of the L. E.-cell phenomenon,1965
3. Lancet, 2, 152 (Infection in rheumatoid arthritis);KAY, A.;Brit. med. J,1967
4. WALKER, W. C. (1967) Quart. J. Med., 36, 239 (Pulmonary infections and rheumatoid arthritis)