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2. The clinical features of RA;Harris,1989
3. The effect of pregnancy or RA;Persellin;Bull Rheum Dis,1977
4. The ameliorating effect of pregnancy on chronic atrophic (infectious rheumatoid) arthritis, fibrositis, and intermittent hydrarthrosis;Hench,1938
5. Effect of pregnancy on the sonet and course of RA;Oka;Ann Rheum Dis,1953