Rituximab in the spondyloarthropathies: data of eight patients followed up in the French Autoimmunity and Rituximab (AIR) registry. Issue 2 (26th January 2010) - Nocturne, G; Dougados, M; Constantin, A; Richez, C; Sellam, J; Simon, A; Wendling, D; Mariette, X; Gottenberg, J-E