Recommendations by the Spanish Society of Rheumatology on Fibromyalgia. Part 1: Diagnosis and treatment Javier Rivera Redondo; Petra Díaz del Campo Fontecha; Cayetano Alegre de Miquel; Miriam Almirall Bernabé; Benigno Casanueva Fernández; Cristina Castillo Ojeda; Antonio Collado Cruz; Pilar Montesó-Curto; Ángela Palao Tarrero; Eva Trillo Calvo; Miguel Ángel Vallejo Pareja; Noé Brito García; Carol Merino Argumánez; M. Nieves Plana Farras;

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;

Approach to interstitial lung disease associated with systemic sclerosis¿A survey to pulmonologists and rheumatologists in Colombia Javier Leonardo Galindo; Olga Milena García; Diana Rocío Gil; Luis Javier Cajas; Emily Rincón-Álvarez; Manuela Rubio;