Effectiveness and safety of rituximab in systemic lupus erythematosus: A case series describing the experience of 2 centres Vicenç Juan Gómez; Irene Carrión-Barberá; Tarek Carlos Salman Monte; Asunción Acosta; Vicenç Torrente-Segarra; Jordi Monfort;

Contributions of the lupus register of the Spanish Society of Rheumatology (RELESSER) to the knowledge of systemic lupus erythematosus in Spain Iñigo Rúa-Figueroa Fernández de Larrinoa; José María Pego-Reigosa;

Epidemiology of systemic lupus erythematosus in Latin America Ivet Etchegaray-Morales; Claudia Mendoza-Pinto; Francisco Javier Arellano-Avendaño; Sandra Ibañez-Ovando; Pamela Munguía-Realpozo; Jacsiry Guadalupe Orbe-Sosa; Edith Ramírez-Lara; Mario García-Carrasco;