Comorbidities in Mexican Mestizo patients with rheumatoid arthritis: A cross-sectional study of 523 patients in a preventive cardio-rheumatology clinic Rosa I. Arvizu-Rivera, Jesus A. Cardenas-de la Garza, Valeria Gonzalez-Gonzalez, Dionicio A. Galarza-Delgado, Jose R. Azpiri-Lopez, Andrea L. Guajardo-Aldaco, Maria F. Elizondo-Benitez, Iris J. Colunga-Pedraza

The association between smoking and the development of rheumatoid arthritis: a population-based case-control study Júlia Sánchez-Campamà, Navraj S. Nagra, Marta Pineda-Moncusí, Albert Prats-Uribe, Daniel Prieto-Alhambra

Carotid atherosclerosis in patients with rheumatoid arthritis and rheumatoid nodules Dionicio Angel Galarza-Delgado, Jorge Antonio Esquivel-Valerio, Mario Alberto Garza-Elizondo, Fernando Góngora-Rivera, Jorge Luis Muñoz-De Hoyos, Griselda Serna-Peña