1. 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 (2): 390-392.
2. Dillman DA: Mail and internet surveys: the tailored design method. 2007, Hoboken, New Jersey: John Wiley & Sons, 2
3. Allaire SH, DeNardo BS, Szer IS, Meenan RF, Schaller JG: The economic impacts of juvenile rheumatoid arthritis. J Rheumatol. 1992, 19 (6): 952-955.
4. Minden K, Niewerth M, Listing J, Biedermann T, Schontube M, Zink A: Burden and cost of illness in patients with juvenile idiopathic arthritis. Ann Rheum Dis. 2004, 63 (7): 836-842. 10.1136/ard.2003.008516.
5. Bernatsky S, Duffy C, Malleson P, Feldman DE, St Pierre Y, Clarke AE: Economic impact of juvenile idiopathic arthritis. Arthritis Rheum. 2007, 57 (1): 44-48. 10.1002/art.22463.