Baseline cellular and molecular characteristics of synovial tissue and relation with TNFI response. Results from the pathobiology of the early arthritis cohort (PEAC) - Ribera, G; Humby, F; Nerviani, A; Lewis, M; Kelly, S; Bombardieri, M; Goldmann, K; Hands, R; Buckley, C; Taylor, P; McInnes, I; Pitzalis, C (Annals of the Rheumatic Diseases, 2019)