Safety of rituximab in the routine treatment of rheumatoid arthritis in Italy in patients refractory to anti-TNFa drugs: results from the observational retrospective-prospective RU... oleh L. Bazzichi, D. Biasi, E. Tinazzi, M. Muratore, R. Pellerito, R. Russo, M. Corsaro Santi, P. De Sandre, O. Epis, M. Granata, B. Kroegler, C. Meschini, F. Versace, C. Astolfi