Authors: Josef S Smolen; Monika M Schoels; Norihiro Nishimoto; Ferdinand C Breedveld; Gerd R Burmester; Maxime Dougados; Paul Emery; Gianfranco Ferraccioli; Cem Gabay; Allan Gibofsky; Juan Jesus Gomez-Reino; Graeme Jones; Tore K Kvien; Miho Murakami; Neil Betteridge; Clifton O Bingham; Vivian Bykerk; Ernest H Choy; Bernard Combe; Maurizio Cutolo; Winfried Graninger; Angel Lanas; Emilio Martin-Mola; Carlomaurizio Montecucco; Mikkel Ostergaard; Karel Pavelka; Andrea Rubbert-Roth; Naveed Sattar; Marieke Scholte-Voshaar; Yoshiya Tanaka; Michael Trauner; Gabriele Valentini; Kevin L Winthrop; Maarten de Wit; Désirée van der Heijde Journal: Ann Rheum Dis Date: 2012-11-21 Impact factor: 19.103