1. Ann. rheum;BEIGHTON, P.H.; SOLOMON, L.; VALKENBURG, H.;Dis; RA in a rural South African Negro population,1975
2. (DJD in a Jamaican rural population);BREMNER, J.M.; LAWRENCE, J.S.; MIALL, W.E.;Ibid,1968
3. In, 'The frequency of Rheumatic Diseases';COBB, S.,1971
4. (Osteo-arthritis of the hip and other joints in Southemn Chinese in Hong Kong. Incidence and related factors);HOAGLUND, F.T.; YAN, A.C.M.C.; WONG, W.L.;J. Bone Jt Surg,1973
5. Brit;KELLGREN, J.H.; LAWRENCE, J.S.;J. industr. Med,1952