Diagnostic value of anti-fibrinogen citrullinated peptide in rheumatoid arthritis Goitybell Martínez Téllez, Bárbara Torres Rives, Jorge Alexis Gómez Morejón, Hilda Pérez Garay, Antonio Melchor Rodríguez, Jose Ángel Portal Miranda

Citrullinated proteins in Rheumatoid Arthritis Elizabeth Olivares Martínez, Diego F. Hernández Ramírez, Carlos A. Núñez-Álvarez, Javier Cabiedes

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