Fibromyalgia with elevated rheumatoid factor is associated with poor therapeutic response but not with progression to rheumatoid arthritis. Prospective cohort study Freddy Liñán Ponce; Juan Leiva Goicochea; David Sevilla Rodríguez; Elmer Hidalgo Bravo; Ginna Obregón Atanacio; Inés Loyola Macalapú; Paola Jáuregui Rojas; Jackeline Yampufe Canani;

Patient-reported outcomes in RA patients treated with tofacitinib or bDMARDs in real-life conditions in two Latin American countries J.M. Reyes; M.V. Gutierrez; H. Madariaga; W. Otero; R. Guzman; J. Izquierdo; M. Abello; P. Velez; D. Castillo; D. Ponce de Leon; T. Lukic; L. Amador;

Survival of first line biological and targeted synthetic disease-modifying anti-rheumatic drugs in patients with rheumatoid arthritis in Chile Marcos Cruces Olivar; Allan D. Burboa; Yolanda M. Gómez;