R08 Real-life use of MRP8/14 serum level measurement in clinical practice as a predictor of outcome after stopping methotrexate in patients with juvenile idiopathic arthritis. (8th October 2018) - Almeida, Beverley; Jordan, Emma J; Palman, Jason; Bale, Peter; Ralph, Elizabeth; Heard, Clare; Robinson, Emily; Ursu, Simona; Gilmour, Kimberly; Wedderburn, Lucy R