Prevalence and demographic characteristics of psoriatic arthritis in Colombia: Data from the National Health Registry 2012¿2018 Daniel G. Fernández-Ávila; Diana N. Rincón-Riaño; Santiago Bernal-Macías; Juan M. Gutiérrez Dávila; Diego Rosselli;

Cost of hospital care in patients with systemic lupus erythematosus in a high complexity hospital in Colombia Juan C. Pérez-Correa; Darwin J. Ariza-Rodríguez; María C. Díaz-Jiménez; Daniel G. Fernández-Ávila; Juan M. Gutiérrez; Diego Rosselli;

Granulomatosis with polyangiitis and skin ulcers mimicking pyoderma gangrenosum: A case report of a diagnostic challenge Linda Navarrete-Motta; Onaldo-José Barrios; Sebastián Gil-Tamayo; Daniela Saaibi; Juan M. Gutiérrez; Daniel G. Fernández-Ávila; Santiago Bernal-Macías; Jorge L. Rodríguez; María-Claudia Díaz;