Association of anti-C1q antibodies, adiponectin and HLA II genotype in Colombian patients with systemic lupus erythematosus with lupus nephritis Sebastián Molina-Ríos; Gerardo Quintana-López; Gustavo Aroca; Eduardo Egea; Antonio Iglesias-Gamarra;

Association between vitamin D deficiency and disease activity in Paraguayan patients with systemic lupus erythematosus Isabel Acosta-Colman; Zoilo Morel; Astrid Paats; Nelson Ortíz; Lourdes Román; Marcos Vázquez; Margarita Duarte; Gabriela Ávila-Pedretti; María Eugenia Acosta; María Teresa Martínez de Filártiga;

Construction of a questionnaire to characterize environmental exposures in patients with systemic lupus erythematosus Carolina Hurtado; Diego Rojas-Gualdrón; Deicy Hernández; Juan Camilo Díaz; Rodrigo Urrego; Elsa María Vásquez-Trespalacios; Ricardo Pineda; Gloria Vásquez;