Perceived quality of training in musculoskeletal ultrasound in Spanish rheumatology services Juan Molina Collada; Lucía Mayordomo;

Prevalence and demographic characteristics of Sjögren's syndrome in Colombia, based on information from the Official Ministry of Health Registry Daniel G. Fernández-Ávila; Diana N. Rincón-Riaño; Santiago Bernal-Macías; Juan M. Gutiérrez Dávila; Diego Rosselli;

Role of the anti-RO/SSA antibody in patients with systemic lupus erythematosus Paula Pérez Jiménez; Laura Tío Barrera; José Luis Andréu Sánchez; Tarek Carlos Salman-Monte; Irene Carrión-Barberà;