1. Carty SM, Snowden M, Silman AJ. Should infection still be considered as the most likely triggering factor for rheumatoid arthritis ? J Rheumatol. 2003;30:425–9.
2. Nakai Y, Wakisaka A, Aizawa M, Itakura K, Nakai H, Ohashi A. HLA and rheumatoid arthritis in Japanese. Arthritis Rheum. 1981;24:722–5.
3. Rashid T, Leirisalo-Repo M, Tani Y, Hukuda S, Kobayashi S, Wilson C, et al. Antibacterial and antipeptide antibodies in Japanese and Finnish patients with rheumatoid arthritis. Clin Rheumatol. 2004;23:134–41.
4. Wallin J, Hillert J, Olerup O, Carlsson B, Strom H. Association of rheumatoid arthritis with a dominant DR1/Dw4, Dw14 sequence motif, but not with a T cell receptor β chain gene alleles or haplotypes. Arthritis Rheum. 1991;34:1416–24.