1. Occurrence of rheumatoid arthritis in a nationwide series of twins;Aho, K.; Koskenvuo, M.; Tuominen, J.; Kaprio, J.;y Rheumatol,1986
2. Twin concordance rates for rheumatoid arthritis: Preliminary results from a nationwide study;J, Silman A.; W, Ollier; M, Hayton R.; S, Holligan; L, Smith I.;Br J Rheumatol,1989
3. The familial aggregation of rheumatoid arthritis and its relationship to the HLA-DR4 association;J, Del Junco D.; S, Luthra H.; F, Annegers J.; W, Worthington J.; T, Kurland L.;AmJ Epidemiol,1984
4. Genetic susceptibility to rheumatoid arthritis and human leukocyte antigen class II polymorphism. AmJMed 1988; 85 (suppl 6A);K, Gregersen P.; J, Silver; J, Winchester R.
5. The contribution of HLA to rheumatoid arthritis;M, Deighton C.; J, Walker D.; D, Griffiths I.; F, Roberts D.;Clin Genet,1989