Authors: Josef S Smolen; Ferdinand C Breedveld; Gerd R Burmester; Vivian Bykerk; Maxime Dougados; Paul Emery; Tore K Kvien; M Victoria Navarro-Compán; Susan Oliver; Monika Schoels; Marieke Scholte-Voshaar; Tanja Stamm; Michaela Stoffer; Tsutomu Takeuchi; Daniel Aletaha; Jose Louis Andreu; Martin Aringer; Martin Bergman; Neil Betteridge; Hans Bijlsma; Harald Burkhardt; Mario Cardiel; Bernard Combe; Patrick Durez; Joao Eurico Fonseca; Alan Gibofsky; Juan J Gomez-Reino; Winfried Graninger; Pekka Hannonen; Boulos Haraoui; Marios Kouloumas; Robert Landewe; Emilio Martin-Mola; Peter Nash; Mikkel Ostergaard; Andrew Östör; Pam Richards; Tuulikki Sokka-Isler; Carter Thorne; Athanasios G Tzioufas; Ronald van Vollenhoven; Martinus de Wit; Desirée van der Heijde Journal: Ann Rheum Dis Date: 2015-05-12 Impact factor: 19.103