1. Epidemiology of the rheumatic diseases;Masi,1979
2. On the occurrence of a factor in human serum activating the specific agglutination of sheep blood corpuscles;Waaler;Acta Path Microbiol Scand,1940
3. Differential agglutination of normal and sensitized sheep erythrocytes by sera of patients with rheumatoid arthritis;Rose,1948
4. Laboratory findings in rheumatoid arthritis;Coggeshall,1960
5. Rheumatoid factors;Davis,1979