RT Journal Article SR Electronic T1 Rituximab versus oral cyclophosphamide for treatment of relapses of proliferative lupus nephritis: a clinical observational study JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 1751 OP 1752 DO 10.1136/annrheumdis-2012-201442 VO 71 IS 10 A1 Moroni, Gabriella A1 Gallelli, Beniamina A1 Sinico, Renato Alberto A1 Romano, Giulio A1 Sinigaglia, Luigi A1 Messa, Piergiorgio YR 2012 UL http://ard.bmj.com/content/71/10/1751.abstract AB