1. Brewer EJ, Bass JC, Cassidy JT. Criteria for the classification of juvenile rheumatoid arthritis. Bull Rheum Dis. 1972;23:712–9.
2. European League Against Rheumatism. EULAR bulletin no. 4: nomenclature and classification of arthritis in children. Basel: National Zeitung AG; 1977.
3. Petty RE, Southwood TR, Baum J, et al. Revision of the proposed classification criteria for juvenile idiopathic arthritis: Durban, 1997. J Rheumatol. 1998 Oct;25(10):1991–4.
4. Petty RE, Southwood TR, Manners P, et al. International league of associations for rheumatology classification of juvenile idiopathic arthritis. Edmonton, second revision, 2001. J Rheumatol. 2004;31:390–2.
5. McRae R. The hand, part 7. In: Clinical orthopaedic examination. 3rd ed. Singapore: Longman Singapore Publishers ltd; 1992.