Authors: Guerreiro-Cacais AO, Norin U, Gyllenberg A, Berglund R, Beyeen AD, Rheumatoid Arthritis Consortium International (RACI), Petit-Teixeira E, Cornélis F, Saoudi A, Fournié GJ, Holmdahl R, Alfredsson L, Klareskog L, Jagodic M, Olsson T, Kockum I, Padyukov L
