Author:
Calvo-Alén J,Marras C,Monteagudo I,Salvador G,Vázquez-Rodríguez T,Tovar J,Vela P,Maceiras F,Bustabad M,Peirό E,Rosas J,Arteaga M,Fernández S,Cea-Calvo L,Mestre Y,Raya E
Publisher
BMJ Publishing Group Ltd and European League Against Rheumatism