1. Flato B, Lien G, Smerdel A et al. Prognostic factors in juvenile rheumatoid arthritis: a case-control study revealing early predictors and outcome after 14.9 years. J Rheumatol 2003; 30:386.
2. Ansell BM. Juvenile rheumatoid arthritis, juvenile chronic arthritis and juvenile spondyloarthropathies. Curr Opin Rheumatol 1992; 4:706.
3. Tsokos GC, Inghirami G, Pillemer SR et al. Immunoregulatory aberrations in patients with polyarticular juvenile rheumatoid arthritis. Clin Immunol Immunopathol 1988; 47:62.
4. Le Parc JM. [Inflammatory arthritis of the elderly]. Rev Prat 2005; 55:2115.
5. Calvo-Alen J, Corrales A, Sanchez-Andrada S et al. Outcome of late-onset rheumatoid arthritis. Clin Rheumatol 2005; 24:485.