Factors associated with asymptomatic vertebral fractures in patients with rheumatoid arthritis in a rheumatology service in Bogotá (Colombia) Alexis Javier Atuesta Rodríguez; Federico Rondón Herrera; Enrique Calvo Páramo; Orfa Yaneth Motta Quimbaya; Yazmín Adriana Caicedo Gélvez;

Associated factors of antiphospholipid syndrome. When do we need antiphospholipid antibodies? Jaime Andrés Escobar Sáenz; Oscar Muñoz Velandia; Paula Ruiz Talero; Daniel Fernández Ávila;

Utility of radiofrequency echographic multi spectrometry in the diagnosis of osteoporosis Juan Felipe Betancur; Luz Eugenia Pérez; Verónica Bernal González; José Fernando Molina Restrepo;