Serum IL-6 and IL-21 are associated with markers of B cell activation and structural progression in early rheumatoid arthritis: results from the ESPOIR cohort
Jacques‐Eric Gottenberg, Jean‐Michel Dayer, Cédric Lukas, B. Ducot, Gilles Chiocchia, Alain Cantagrel, Alain Saraux, Pascale Roux‐Lombard, Xavier Mariette
Abstract