Prevalence of depressive and anxiety disorders in systemic lupus erythematosus and their association with anti-ribosomal P antibodies - Nery, Fabiano G.; Borba, Eduardo F.; Viana, Vilma S. T.; Hatch, John P.; Soares, Jair C.; Bonfá, Eloisa; Lotufo Neto, Francisco (Progress in Neuro-Psychopharmacology & Biological Psychiatry, 2008)