selected publications academic article in scopus Calculated versus measured urine osmolarity: Accuracy of estimated urine density. Revista de Investigacion Clinica. 70:310-318. 2018 Pneumonia in patients with systemic lupus erythematosus: Epidemiology, microbiology and outcomes. Lupus. 27:1953-1959. 2018 C-reactive protein (CRP) polymorphisms and haplotypes are associated with SLE susceptibility and activity but not with serum CRP levels in Mexican population. Clinical Rheumatology. 37:1817-1824. 2018