1. Ravelli A, Martini A: Juvenile idiopathic arthritis. Lancet. 2007, 369: 767-778. 10.1016/S0140-6736(07)60363-8.
2. Petty RE, Southwood TR, Baum J, Bhettay E, Glass DN, Manners P, Maldonado-Cocco J, Suarez-Almazor M, Orozco-Alcala J, Prieur AM: Revision of the proposed classification criteria for juvenile idiopathic arthritis: Durban, 1997. J Rheumatol. 1998, 25: 1991-1994.
3. Petty RE, Southwood TR, Manners P, Baum J, Glass DN, Goldenberg J, He X, Maldonado-Cocco J, Orozco-Alcala J, Prieur AM: International League of Associations for Rheumatology classification of juvenile idiopathic arthritis: second revision, Edmonton, 2001. J Rheumatol. 2004, 31: 390-392.
4. Martini A: Are the number of joints involved or the presence of psoriasis still useful tools to identify homogeneous disease entities in juvenile idiopathic arthritis?. J Rheumatol. 2003, 30: 1900-1903.
5. Andersson Gare B: Juvenile arthritis–who gets it, where and when? A review of current data on incidence and prevalence. Clin Exp Rheumatol. 1999, 17: 367-374.