Shared epitope classification methods according to Gregersen and de Vries allow adequate characterization of patients with rheumatoid arthritis in a Colombian population Catalina María Arévalo-Caro; Consuelo Romero-Sánchez; Juan José Yunis-Londoño;

Clinical and demographic characterisation of the population with osteoporosis in two reference medical centres in Colombia Jose Fernando Molina; Carlos Enrique Toro; Humberto Reynales Londoño; Nubia Hernandez;

The coexistence of rheumatoid arthritis and ankylosing spondylitis: Case series and literature review Hanene Lassoued Ferjani; Ben Ayed Hiba; Dorra Ben Nessib; Dhia Kaffel; Kaouther Maatallah; Wafa Hamdi;