The association between interleukin-6 promoter polymorphisms and rheumatoid arthritis by ethnicity: A meta-analysis of 33 studies Blanca T. Pacheco-Soto; Leonardo M. Porchia; William C. Lara-Vazquez; Enrique Torres-Rasgado; Ricardo Perez-Fuentes; M. Elba Gonzalez-Mejia;

Clinical, Patient-Reported, and Ultrasound Outcomes from an Open-Label, 12-week Observational Study of Certolizumab Pegol in Spanish Patients with Rheumatoid Arthritis with or without Prior Anti-TNF Exposure Francisco J. Blanco; Esteban Rubio-Romero; Raimon Sanmartí; César Díaz-Torné; Pablo Talavera; Jochen Dunkel; Esperanza Naredo;

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;