Frequency of positive ANCA test in a population with clinical symptoms suggestive of autoimmune disease and the interference of ANA in its interpretation Consuelo Romero-Sánchez; Mario Benavides-Solarte; Isabel Galindo-Ibáñez; Ana Isabel Ospina-Caicedo; Viviana Parra-Izquierdo; Lorena Chila-Moreno; Amanda Villa; María Consuelo Casas-Gómez; Ignacio Angarita; Wilson Bautista-Molano; Verónica Romero-Álvarez; Juan Manuel Bello-Gualtero;

Survey to evaluate exposure to environmental factors in patients with rheumatoid arthritis Alexandra Zúñiga; Alba Luz León Álvarez; Luisa Carbal-Reyes; Daniel Rodríguez; Juan-Camilo Díaz; Gloria Vásquez; Diana Castaño;

Clinical features of patients with hands arthralgia referred from primary care physicians to rheumatologists: A cohort study Gabriel Figueroa-Parra; Martha Mariana Castañeda-Martinez; Pablo Herrera-Sandate; Diana Daniela Castañeda-Martinez; Jorge Antonio Esquivel-Valerio; David Vega-Morales;