Reduction of disease activity, corticosteroids use, and healthcare resource utilisation in patients with systemic lupus erythematosus treated with belimumab in clinical practice settings: OBSErve Spain multicentre study Josefina Cortés-Hernández; Carlos Marras Fernández-Cid; Jose Luis Andreu Sánchez; Jaime Calvo Alén; Angel M. García-Aparicio; Elvira Díez Álvarez; Francisco Javier Hidalgo Bermejo; Carlos Coronell; Alessandra Perna; Josep Ordi Ros;