1. Lower limb injuries in children in sports;Bruns;Clin Sports Med,2000
2. Utilization of physician offices by adolescents in the United States;Ziv;Pediatrics,1999
3. International League of Associations for Rheumatology classification of juvenile idiopathic arthritis: second revision, Edmonton, 2001;Petty;J Rheumatol,2004
4. Incidence and prevalence of juvenile chronic arthritis: a population survey;Andersson Gare;Ann Rheum Dis,1987
5. Prevalence of chronic skin and musculoskeletal conditions. United States-1976;Bonham;Vital Health Stat 10,1978