Lymphocytotoxic antibodies in systemic lupus erythematosus are associated with disease activity irrespective of the presence of neuropsychiatric manifestations - Magalhaes, M. B.; Silva, L. M.; Voltarelli, Júlio César; Donadi, Eduardo Antônio; Louzada Júnior, Paulo (Scandinavian Journal of Rheumatology, 2007)