RT Journal Article SR Electronic T1 Comorbidities in a Mexican mestizo cohort with established rheumatoid arthritis JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP e14 OP e14 DO 10.1136/annrheumdis-2013-204895 VO 73 IS 3 A1 David Vega-Morales A1 Marta Barrón-Almazán A1 Ana Arana-Guajardo YR 2014 UL http://ard.bmj.com/content/73/3/e14.abstract AB