Also known as: Systemic juvenile idiopathic arthritis / Systemic onset juvenile idiopathic arthritis / Still's disease NOS / Systemic onset juvenile chronic arthritis (disorder) / Juvenile rheumatoid arthritis with systemic onset, unspecified site / Still's disease / Still's disease -RETIRED- / Juvenile-Onset Still Disease / Polyarticular juvenile rheumatoid arthritis (disorder) [Ambiguous] / Juvenile rheumatoid arthritis &/or Still's disease / Still's disease - juvenile rheumatoid arthritis (disorder)