1. Arnett FC et al. The 1987 revised ARA criteria for classification of rheumatoid arthritis. Arthritis Rheum. 1988;31:315.
2. Zvaifler NJ et al. Rheumatoid arthritis. In: Schumacher HR Jr, ed. Primer on the Rheumatic Diseases. 9th ed. Atlanta: Arthritis Foundation; 1988:83.
3. Harris ED Jr. The clinical features of rheumatoid arthritis. In: Kelly WN et al, eds. Textbook of Rheumatology. 3rd ed. Philadelphia: WB Saunders; 1989:943.
4. Stasney P. Association of the B-cell alloantigen DRw4 with rheumatoid arthritis. N Engl J Med. 1978;298:869.
5. Harris ED Jr. Management of rheumatoid arthritis. In: Kelly WN et al, eds. Textbook of rheumatology. 3rd ed. Philadelphia: WB Saunders; 1989:982.