Risk factors associated with different stages of atherosclerosis in Colombian patients with rheumatoid arthritis - Rojas-Villarraga, Adriana; Ortega-Hernandez, Oscar-Danilo; Gomez, Luis F; Pardo, Aryce L; Lopez-Guzman, Silvia; Arango-Ferreira, Camila; Hincapie, Maria-Eugenia; Betancur, Juan F; Pineda-Tamayo, Ricardo; Diaz, Francisco J; Anaya, Juan-Manuel (SEMINARS IN ARTHRITIS AND RHEUMATISM, 2008)