1. Ankylosing spondylitis and HLA-A 27;Lancet,1973
2. HLA-A antigen 27 and reactive arthritis;Aho, K.; Ahvonen, P.; Lassus, A.; Sievers, K.; Tiilikainen, A.;Lancet,1973
3. Follow up study on patients with Reiter's disease and reactive arthritis, with special reference to HLA-B27;Leirisalo-Repo, M.; Skylv, G.; Kousa, M.;Ardhitis Rheun,1982
4. B27 positive diseases versus B27 negative diseases;Linssen, A.; W, Feltkamp T.E.;Ann Rheum Dis,1988
5. Histocompatibility antigens in psoriasis, psoriatic arthropathy and ankylosing spondylitis;D, Armstong R.; S, Panayi G.; I, Welsh K.;Ann Rheum Dis,1983