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;

Gastrointestinal symptoms in patients using methotrexate: A cross-sectional study in a sample with rheumatoid arthritis Carina Albuquerque Roberto; Isabela Stachevski; Barbara Stadler Kahlow; Renato Nisihara; Thelma Skare;

Update of the Consensus Statement of the Spanish Society of Rheumatology on the use of biological and synthetic targeted therapies in rheumatoid arthritis José María Álvaro-Gracia Álvaro; Petra Díaz del Campo Fontecha; José Luis Andréu Sánchez; Alejandro Balsa Criado; Rafael Cáliz Cáliz; Isabel Castrejón Fernández; Hèctor Corominas; José A. Gómez Puerta; Sara Manrique Arija; Natalia Mena Vázquez; Ana Ortiz García; Chamaida Plasencia Rodríguez; Lucía Silva Fernández; Jesús Tornero Molina;