1. Seronegative polyarthritis;Wright,1976
2. Associations between ankylosing spondylitis, psoriatic arthritis, Reiter's disease, the intestinal arthropathies, and Behcet's syndrome;Moll,1974
3. Ankylosing spondylitis and HL-A 27;Brewerton;Lancet,1973
4. Diagnostic criteria for population studies;Kellgren;Bull Rheum Dis,1962
5. Sacro-ilitis in eight populations;Gofton;Ann Rheum Dis,1966