Interleukin-6 signalling in juvenile idiopathic arthritis is limited by proteolytically cleaved soluble interleukin-6 receptor - Peake, N J; Khawaja, K; Myers, A; Nowell, M A; Jones, S A; Rowan, A D; Cawston, T E; Foster, H E (Rheumatology (Oxford), 2006)